SlideShare una empresa de Scribd logo
1 de 49
Meaning of Research ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Definitions : Clifford Woody – Research comprises defining and redefining problems, formulating hypothesis or suggested solutions; collecting, organising and evaluating data ; making deductions and reaching conclusions ; and at last carefully testing the conclusions to determine whether they fit the formulated hypothesis. Research is thus, an original contribution to the existing stock of knowledge making for its advancement
Objectives of Research ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Types of Research Descriptive Research : -Is one which describes, records, analyses and interprets the conditions that exist.  -It basically describes ‘what is’.  -It describes the state of affairs as it exists at present.  –  The researcher has no control over the variables, he/she can only report what has happened or is happening. 2. Analytical research : - The researcher has to use facts or information already available and analyse these to make a critical evaluation of the material.
3. Applied (Action ) research : - Aims at finding a solution for an immediate problem facing a society or an industrial/business organisation. - Leads to a deeper understanding of the situation by the local people and by the research team. -Examples are – research to identify social, economic or political trends that may affect a particular institution – marketing research – evaluation research etc. 4. Fundamental ( Basic) research : - Is mainly concerned with generalisations and with the formulation of a theory –  Gathering knowledge for the sake of knowledge  - eg. studies concerning human behaviour.
Research concerning some natural phenomenon or relating to pure mathematics are fundamental research Research studies aimed at certain conclusions facing a concrete social or business problem is an example of applied research. 5. Quantitative Research : based on measurement of quantity or amount. It is applicable to phenomenon that can be expressed in terms of quantity 6. Qualitative research : Is concerned with qualitative phenomenon ie. the  phenomenon relating to or involving quality or kind. Ex. Motivation research ; Attitude or opinion research – Specially important in behavioral sciences.
7. Conceptual Research : It is related to some abstract ideas or theory – generally used by philosophers or thinkers to develop new concepts or to interpret existing ones – 8. Empirical research : it relies on experience or observation alone – without due regard for system and theory – it is data based research, coming up with conclusions which are capable of being verified by observation or experiment Significance of research: Research inculcates scientific and inductive thinking and it promotes the development of logical habits of thinking and organization It provides the basis for nearly all govt. policies in our economic system
- It has its special significance in solving various operational and planning problems of business and industry -It is important for social scientists in studying social relationships and in seeking answers to various social problems. TESTING HYPOTHESIS
RESEARCH  DESIGN : “ Research Design is the arrangement of conditions for collection and analysis of data in a manner that aims to combine relevance to the research purpose with economy in procedure” - It is the detailed plan of an investigation -  It is the conceptual structure within which the research is conducted -  It constitutes the blue print for the collection, measurement and analysis of data What – Why – Where – When etc
The Research design decisions happen to be in respect of : 1. What is the study about? 2. Why is the study being made? 3. Where will the study be carried out? 4. What type of data is required? 5. Where can the required data be found? 6. What periods of time will the study include? 7. What will be the sample design? 8. What techniques of data collection will be applied? 9. How will the data be analysed? 10. In what style will the report be prepared?
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
2. Extraneous variable : Independent variables that are not related to the purpose of the study, but may affect the dependent variable are termed as extraneous variable Eg. Children’s gain in social studies achievement and their self-concepts – intelligence.  Extraneous variable  3.Experimental Group : A group of elements which is administered some form of experimental treatment is known as the experimental group. 4.Control group : When a group is exposed to usual conditions and which does not receive any experimental treatment are called control group. Eg. Special coaching ; farmers exposed to TV program
5.Treatment : The different conditions under which the experimental groups are put are usually referred to as treatment. Eg. Comparative impact of three varieties of fertilizers on the yield of wheat. 6.Experiment : The process of examining the truth of a statistical hypothesis relating to some research problem. Eg experiemnt to examine the usefulness of a certain newly developed drug. 7.Experimental units: The pre determined plots or the blocks where different treatments are used is known as experimental units.
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
c. The principle of local control :- through this principle we can eliminate the variability due to extraneous factors from the experimental error – grouping (of homogenous units) – blocking – balancing Sampling Design: What is a sample – sampling technique is the selection process – The survey so conducted is the sample survey Sample design: is a definite plan for obtaining a sample from a given population – is the technique or the procedure adopted by the researcher in selecting samples Steps – 1. Type of Universe Assignment – IMPORTANT TYPES OF EXPERIMENTAL DESIGN
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Scales and Measurements : A scale is a technique to measure some thing. Scaling is used in ordering a series of items along sort of continuum. – they are methods of turning a series of qualitative facts into a quatitative series Measurements are yardsticks – Measurement in research consists of assigning numbers to empirical events in compliance with a set of rules – Hence, measurement is a three part process (1) Selecting observable empirical events (2) Developing a set of mapping rules ie a scheme for assigning numbers (3) Applying mappimg rule to each observation of that event.  Example of studying people who attend a auto show
Different Scales :( page 223 of ur book) 1. Nominal Scale : It is simply a system of assigning number symbols to events in order to label them – example: assigning numbers to football players in order to identify them – just for convenience – no quantitative value – can not come out with a meaningful value – We use Mode as the measure of Central Tendency – eg. classifying the residents of a city according to religious preferences.  2. Ordinal Scale :  The lowest level of the ordered scale that is commonly used is the ordinal scale – This scale places events in order – Eg. Rank orders represent ordinal scales – a student’s rank in his graduation class involves the use of ordinal scale – these scales have no absolute values – all that we can say is that one person is higher or lower in rank on the scale –
Ram’s rank is 10 and Mohan’s is 40 – what do you conclude? – If a is greater than b and b is greater than c, then a is greater than c – just mentions greater than or less than , without stating how much greater or less - the appropriate method of central tendency is median 3. Interval Scale: It has the power of nominal and ordinal scale plus one additional strength, the concept of equality of intervals – eg. the interval between 1 and 2 equals the difference between 2 and 3.  In this case the intervals are adjusted in terms of some rule that has been established as a basis for making the units equal – these scales can have an arbitrary zero –  it lacks a true zero  – The Fahrenheit scale is an example of an interval scale – Mean is the appropriate measure of central tendency
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Characteristics of Sound Measurement : Sound measurement must meet the tests of Validity, Reliability and Practicality Test of Validity : It refers to the extent to which a test measures what we actually wish to measure – it can also be thought of as Utility – validity is the extent to which differences found with a measuring instrument reflect true differences among those being tested. Test of Reliability : A measuring instrument is reliable if it provides consistent results – eg. if a scale is consistently overweighs objects by 5 kgs is a reliable scale but is not a valid scale – Reliability is concerned with estimates of degree to which measurement is free of random or unstable error.
Test of Practicality :This can be judged in terms of economy, convience and interpretability Scaling :  It is defined as ‘ the procedure for the assignment of numbers ( or symbols) to a property of objects in order to impart some of the characteristics of numbers to the properties in question’. It describes the procedure of assigning numbers to various degrees of opinion, attitudes and other concepts – a scale is a continnum, consisting of the highest point and the lowest point
Important Scaling Techniques : Rating Scales : It involves qualitative description of a limited number of aspects of a thing or of traits of a person – we judge properties of objects without reference to other similar objects – these ratings are in the form of “like – dislike”, “excellent-good-average-below average-poor”. In practice three to seven point scales are generally used There are two types of Rating scale- (1) The Graphic Rating Scale : various points are usually put along the line to form a continuum and the rater indicates his rating.  Eg. How do you like the product
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Attitude Scales : Thurstone defined ‘Attitude’ as “the degree of positive or negative feeling associated with some psychological object like symbol, phrase, slogan, person, institution, ideal or ideas towards which people can differ in varying degrees.” While measuring the attitudes of the people, we generally follow the technique of preparing the opinionnaire  ( attitude scale) in such a way that the score of the individual responses assigns him a place on a scale.  People may conceal their attitudes and express socially acceptable opinions – They may not really know how they feel about a social issue – People may be unaware of their attitude about an abstract situation until confronted with real situation – even behaviour itself is at times not a true indication of attitude. Eg- Politicians kissing babies Is this bevaviour a true expression of affection towards infants?   No Hence there is no sure method of measuring attitude.
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
2. Thurstone Scale ( Differential scale ) : This has been developed using consensus scale approach – In this approach the selection of items is made by a panel of judges who evaluate the items in terms of whether they are relevant to the topic of area.  Detailed procedure : 1) The researcher gather a large number of statements, usually 20 or more ; 2) These statements are submitted to a panel of judges ( 50 to 300 judges ), requesting them to classify these statements into eleven groups. Those statements which he/she considers most favourable to the object are put in the first group; those considered next most in the second group ……… those consider most unfavourable in the last group.
It may be noted here that only the neutral and the two extreme categories ( most favoured and most unfavoured) on which the statements are to be judged are defined. The remaining eight are unlabelled to create the impression of equal appearing intervals between the three labels. 3) The scale value of a statement is computed as the median position to which it is assigned by the group of judges. 4) A final selection is made taking items or statements that are spread out evenly along the scale from one extreme position to the other and for which there are more judges’ agreement.
3) Summated Scales ( Likert Scale ) This scale consists of a set of items ( statements) to which the subject is asked to react. The respondents are asked to respond to each item in terms of several degrees of agreement or disagreement and the scores may be, for eg. strongly agree - 5 ; agree-4; undecided-3; disagree – 2; and strongly disagree – 1. Total score is obtained when all the weights are summated 4)Semantic Differential (S D) Scale: This is developed by Charles E.Osgood and others in 1957. The word Semantic means relating to meaning in language.  SD scaling is an attempt to measure the psychological meanings of an object. This scaling technique is used rather easily in decisional survey research. Its main use has been in connection with comparison of brand and company images, determination of attitudinal characteristics of consumers and analysis of the effectiveness of promotional activities.
“ The S D scale is a technique for psychological measuring of things, usually concepts or objects of people. It consists of a series or set of descriptive adjectives or phrases which are polar opposite”. They are generally classified into three categories 1. Evaluative  : Good – Bad ; Beautiful – Ugly; Clean – Dirty;  Fair-Unfair 2. Potency :  Large – Small; Strong – Weak; Thick – Thin;  Loud-Soft; Deep – Shallow. 3. Activity :  Fast – Slow; Active – Passive; Sharp-Dull. The respondents are asked to describe the concept under investigation according to the set of scales using the method of rating. Thus, the technique enables an investigator to examine both the context and intensity of people’s attitudes.
SURVEY RESEARCH : DATA COLLECTION : Primary Data :   are collected afresh and for the first time – original in character – we collect primary data during the course of doing experiment in an  Experimental Research,  but for  Descriptive Research , we can obtain primary data either through observation or through direct communication with the respondents. Methods : Observation method  : Commonly used in studies relating to behavioural sciences – we all observe many things, but it is not a scientific observation – it will become scientific when it serves a formulated research purpose, is systematically planned and recorded and is subjected to checks and controls on validity and reliability – eg. investigator himself looking at the wrist watch the respondent is using instead of asking with him the brand of wrist watch, child behaviour
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
Clinical Interview :  is concerned with broad underlying feelings or motivations or with the course of individual’s life experience – generally left to the interviewer’s discretion Non-directive interview:  the interviewer’s function is just to encourage the respondent to talk about the given topic with a bare minimum of direct questioning – interviewer is acting as a catalyst  Telephone Interview : Questionnaires  Collection of data through Schedules :
[object Object],[object Object],[object Object],[object Object],[object Object]
3. Pantry Audits : It is used to estimate consumption of the  basket of goods at the consumer level – the investigator collects an inventory of types, quantities and prices of commodities consumed – data are recorded from the examination of consumer’s pantry – objective is to find out what type of consumers buy certain products and certain brands – this method may be supplemented by direct questioning relating to reasons and circumstances under which  particular products were purchased – to know the purchase habits 4. Consumer Panels :  An extension of the pantry audit approach on a regular basis is known as ‘Consumer Panels’ – a set of consumers are arranged to maintain detailed daily records of their consumption and it is made available to the investigator on demand – same consumers are interviewed repeatedly over a period of time – are of two types: a) Transitory consumer panel :  Is set up to measure the effect of a particular phenomenon – conducted on a before-and-after basis – to study consumer behaviour and attitude
b) Continuing consumer pattern : Is often set up for an indefinite period with a view  to collect data on a particular aspect of consumer behaviour over time – radio listening and watching TV. 5. Use of Mechanical devises : Eye camera ( to record the focus the eyes of  respondent) Pupilometric camera ( to record dilation of the pupil as a result of a visual stimulus) Psychologalvanometer ( used for measuring the extent of body exitement as result of the visual stimulus Motion picture camera ( to record movement of body of a buyer while deciding to buy  consumer goods from a shop – influence of packaging or information given on the label would stimulate a buyer ) Audio meters ( used by TV concerns to find out the type of programmes preferred by the people)
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
limited number of categories or classes. Eg. 1 for male and 2 for female or M for male and F for female. The first one is  numeric coding  and the second one is  alphanumeric coding. Coding helps the researcher to reduce several thousand replies to a few categories containing the critical information needed for analysis. Coding can either be done on the margin of questionnaire or transcribe the data  from the questionnaire to a coding sheet. 3. Classification :  Reducing raw data into homogenous groups – it is the process of arranging data in groups or classes on the basis of common characteristics  a. Classification according to attributes  :They are descriptive in nature (qualitative), like literacy, sex, honesty etc. – these can not be measured qualitatively – only their presence or absence in an individual item can be noticed.
b.Classification according to class intervals :  These refer to quantitative phenomenon which can be measured through some statistical units – eg. data relating to income, production, age, height & weigh etc. 4. Tabulation :  It is a concise, logical and orderly arrangement of data in columns and rows – summarising raw data and display them in compact form – it provides a  basis for starting statistical comparisons – it could be one way , which furnishes answers to questions about one characteristic of the data only – Two-way, three-way and manifold tables  deal with two, three or several interrelated characteristics of the data. These are known as cross-tabulation. Charts and Graphs :
REPORT WRITING : Report helps to know what has been done, why it was done, how it was done, what results were obtained and what conclusions and recommendations have been arrived at. It should be written in a clear and unambiguous language so that the readers can objectively judge the adequacy and validity of the research Steps in Report Writing : 1.Logical analysis of the subject matter 2.Preparation of the final outline 3.Preparation of the rough draft 4.Rewriting and polishing of the rough draft 5.Preparation of the final bibliography 6. Wring the final draft
Cluster Analysis It is a set of techniques for grouping similar objects or people – originally applied in taxonomy but later extended to economics, marketing etc.  –  This analysis starts with an undifferentiated group of people, events or objects and attempts to recognise them into homogenous subgroups. - Cluster analysis is used to classify persons or objects into a small number of mutually exclusive and exhaustive groups or clusters. - There should be high internal (Within cluster) homogeneity and high external (between cluster) heterogeneity. - One of the important uses of cluster analysis in marketing is market segmantation. - The main task involved in segmentation is to classify people, materials etc. into groups based on certain common characteristics.
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Path Analysis : The objective of this analysis is to get a clear picture of the direct and indirect effects of the independent variables on the dependent variable

Más contenido relacionado

La actualidad más candente

Definition and types of research
Definition and types of researchDefinition and types of research
Definition and types of research
fadifm
 
Introduction to research
Introduction to researchIntroduction to research
Introduction to research
Reshma Reddy
 

La actualidad más candente (20)

Definition and types of research
Definition and types of researchDefinition and types of research
Definition and types of research
 
Research design
Research designResearch design
Research design
 
RESEARCH PROBLEM
RESEARCH PROBLEMRESEARCH PROBLEM
RESEARCH PROBLEM
 
Techniques involved in defining a research problem
Techniques involved in defining a research problemTechniques involved in defining a research problem
Techniques involved in defining a research problem
 
Methods of data collection (research methodology)
Methods of data collection  (research methodology)Methods of data collection  (research methodology)
Methods of data collection (research methodology)
 
Steps in Research-Types of research-Types of Steps in Research-Types of resea...
Steps in Research-Types of research-Types of Steps in Research-Types of resea...Steps in Research-Types of research-Types of Steps in Research-Types of resea...
Steps in Research-Types of research-Types of Steps in Research-Types of resea...
 
Research Design
Research DesignResearch Design
Research Design
 
Research design
Research designResearch design
Research design
 
Introduction to Research Methodology
Introduction to  Research MethodologyIntroduction to  Research Methodology
Introduction to Research Methodology
 
Research problem
Research problem Research problem
Research problem
 
Exploratory Research Design - Meaning and Methods
Exploratory Research Design - Meaning and MethodsExploratory Research Design - Meaning and Methods
Exploratory Research Design - Meaning and Methods
 
Research design
Research design Research design
Research design
 
Concept of research design
Concept of research designConcept of research design
Concept of research design
 
Types of research
Types of researchTypes of research
Types of research
 
Research process
Research process Research process
Research process
 
Introduction to research
Introduction to researchIntroduction to research
Introduction to research
 
Research process
Research process Research process
Research process
 
Types of research designs
Types of research designsTypes of research designs
Types of research designs
 
Research Process and Research Design.
Research Process and Research Design.Research Process and Research Design.
Research Process and Research Design.
 
Selection of a Research Problem
Selection of a Research ProblemSelection of a Research Problem
Selection of a Research Problem
 

Destacado

Measurement and scaling techniques
Measurement  and  scaling  techniquesMeasurement  and  scaling  techniques
Measurement and scaling techniques
Ujjwal 'Shanu'
 
Measurement and scales
Measurement and scalesMeasurement and scales
Measurement and scales
Karan Khaneja
 
Different Types of Maps
Different Types of MapsDifferent Types of Maps
Different Types of Maps
cpbrown10
 
Spss measurement scales
Spss measurement scalesSpss measurement scales
Spss measurement scales
Naveed Saeed
 
Basic Research Design
Basic Research DesignBasic Research Design
Basic Research Design
Jason Wrench
 
6 measurement & scaling
6  measurement & scaling6  measurement & scaling
6 measurement & scaling
arjeskay
 
Variables And Measurement Scales
Variables And Measurement ScalesVariables And Measurement Scales
Variables And Measurement Scales
guesta861fa
 
Formulating hypotheses
Formulating hypothesesFormulating hypotheses
Formulating hypotheses
Aniket Verma
 

Destacado (20)

Measurement and scaling techniques
Measurement  and  scaling  techniquesMeasurement  and  scaling  techniques
Measurement and scaling techniques
 
Measurement and scales
Measurement and scalesMeasurement and scales
Measurement and scales
 
Research methodology measurement
Research methodology measurement Research methodology measurement
Research methodology measurement
 
Research Methodology - types of scale
Research Methodology - types of scaleResearch Methodology - types of scale
Research Methodology - types of scale
 
Classification of maps based on scale
Classification of maps based on scaleClassification of maps based on scale
Classification of maps based on scale
 
Map reading
Map readingMap reading
Map reading
 
Types of Map Scales
Types of Map ScalesTypes of Map Scales
Types of Map Scales
 
Geography Skills: Scale
Geography Skills:  ScaleGeography Skills:  Scale
Geography Skills: Scale
 
Importance of Sampling design & Sample size
Importance of Sampling design & Sample sizeImportance of Sampling design & Sample size
Importance of Sampling design & Sample size
 
Methods of data collection..brm...
Methods of data collection..brm...Methods of data collection..brm...
Methods of data collection..brm...
 
Different Types of Maps
Different Types of MapsDifferent Types of Maps
Different Types of Maps
 
Spss measurement scales
Spss measurement scalesSpss measurement scales
Spss measurement scales
 
Basic Research Design
Basic Research DesignBasic Research Design
Basic Research Design
 
6 measurement & scaling
6  measurement & scaling6  measurement & scaling
6 measurement & scaling
 
Questionnaire Construction
Questionnaire ConstructionQuestionnaire Construction
Questionnaire Construction
 
Introduction to statistics...ppt rahul
Introduction to statistics...ppt rahulIntroduction to statistics...ppt rahul
Introduction to statistics...ppt rahul
 
Statistical Methods and Measurement scales
Statistical Methods and Measurement scalesStatistical Methods and Measurement scales
Statistical Methods and Measurement scales
 
Variables And Measurement Scales
Variables And Measurement ScalesVariables And Measurement Scales
Variables And Measurement Scales
 
Formulating hypotheses
Formulating hypothesesFormulating hypotheses
Formulating hypotheses
 
Surveying
Surveying Surveying
Surveying
 

Similar a Measurement Scale

Rm 1 Intro Types Research Process
Rm   1   Intro Types   Research ProcessRm   1   Intro Types   Research Process
Rm 1 Intro Types Research Process
itsvineeth209
 
Research methodology unit-1
Research methodology unit-1Research methodology unit-1
Research methodology unit-1
Gnanaprakasam
 
Research lesson what is research method
Research lesson what is research methodResearch lesson what is research method
Research lesson what is research method
Harve Abella
 
Research Methodology
Research MethodologyResearch Methodology
Research Methodology
Vikas Dalmia
 

Similar a Measurement Scale (20)

Lecture # 3 nilat (dec 6th 2017)
Lecture # 3 nilat (dec 6th 2017)Lecture # 3 nilat (dec 6th 2017)
Lecture # 3 nilat (dec 6th 2017)
 
Research Methodology
Research MethodologyResearch Methodology
Research Methodology
 
Research methodology
Research methodologyResearch methodology
Research methodology
 
Rm 1 Intro Types Research Process
Rm   1   Intro Types   Research ProcessRm   1   Intro Types   Research Process
Rm 1 Intro Types Research Process
 
BRM Research Outline, Ch 1-7 NEW.pptx
BRM Research Outline, Ch 1-7 NEW.pptxBRM Research Outline, Ch 1-7 NEW.pptx
BRM Research Outline, Ch 1-7 NEW.pptx
 
RM_Ch_1.pdf
RM_Ch_1.pdfRM_Ch_1.pdf
RM_Ch_1.pdf
 
FIELD RESEARCH
FIELD RESEARCHFIELD RESEARCH
FIELD RESEARCH
 
Research methodology as per the syllabus of CDLU Sirsa
Research methodology as per the syllabus of CDLU SirsaResearch methodology as per the syllabus of CDLU Sirsa
Research methodology as per the syllabus of CDLU Sirsa
 
Research methodology unit-1
Research methodology unit-1Research methodology unit-1
Research methodology unit-1
 
Research lesson what is research method
Research lesson what is research methodResearch lesson what is research method
Research lesson what is research method
 
Introduction to research methodology
Introduction to research methodologyIntroduction to research methodology
Introduction to research methodology
 
Research Methodology
Research MethodologyResearch Methodology
Research Methodology
 
Introduction to research methodology
Introduction to research methodologyIntroduction to research methodology
Introduction to research methodology
 
Rm pondichery university
Rm pondichery universityRm pondichery university
Rm pondichery university
 
Research methodology
Research methodologyResearch methodology
Research methodology
 
research methodology-
research methodology-research methodology-
research methodology-
 
Research methodology
Research methodologyResearch methodology
Research methodology
 
Language and Literature Research (7 of 16)
Language and Literature Research (7 of 16)Language and Literature Research (7 of 16)
Language and Literature Research (7 of 16)
 
research design sonal ppt
research design sonal pptresearch design sonal ppt
research design sonal ppt
 
Introduction To Research
Introduction To ResearchIntroduction To Research
Introduction To Research
 

Último

Último (20)

Scaling API-first – The story of a global engineering organization
Scaling API-first – The story of a global engineering organizationScaling API-first – The story of a global engineering organization
Scaling API-first – The story of a global engineering organization
 
Real Time Object Detection Using Open CV
Real Time Object Detection Using Open CVReal Time Object Detection Using Open CV
Real Time Object Detection Using Open CV
 
AWS Community Day CPH - Three problems of Terraform
AWS Community Day CPH - Three problems of TerraformAWS Community Day CPH - Three problems of Terraform
AWS Community Day CPH - Three problems of Terraform
 
ProductAnonymous-April2024-WinProductDiscovery-MelissaKlemke
ProductAnonymous-April2024-WinProductDiscovery-MelissaKlemkeProductAnonymous-April2024-WinProductDiscovery-MelissaKlemke
ProductAnonymous-April2024-WinProductDiscovery-MelissaKlemke
 
How to Troubleshoot Apps for the Modern Connected Worker
How to Troubleshoot Apps for the Modern Connected WorkerHow to Troubleshoot Apps for the Modern Connected Worker
How to Troubleshoot Apps for the Modern Connected Worker
 
Connector Corner: Accelerate revenue generation using UiPath API-centric busi...
Connector Corner: Accelerate revenue generation using UiPath API-centric busi...Connector Corner: Accelerate revenue generation using UiPath API-centric busi...
Connector Corner: Accelerate revenue generation using UiPath API-centric busi...
 
What Are The Drone Anti-jamming Systems Technology?
What Are The Drone Anti-jamming Systems Technology?What Are The Drone Anti-jamming Systems Technology?
What Are The Drone Anti-jamming Systems Technology?
 
Apidays New York 2024 - The value of a flexible API Management solution for O...
Apidays New York 2024 - The value of a flexible API Management solution for O...Apidays New York 2024 - The value of a flexible API Management solution for O...
Apidays New York 2024 - The value of a flexible API Management solution for O...
 
Powerful Google developer tools for immediate impact! (2023-24 C)
Powerful Google developer tools for immediate impact! (2023-24 C)Powerful Google developer tools for immediate impact! (2023-24 C)
Powerful Google developer tools for immediate impact! (2023-24 C)
 
Understanding Discord NSFW Servers A Guide for Responsible Users.pdf
Understanding Discord NSFW Servers A Guide for Responsible Users.pdfUnderstanding Discord NSFW Servers A Guide for Responsible Users.pdf
Understanding Discord NSFW Servers A Guide for Responsible Users.pdf
 
Strategize a Smooth Tenant-to-tenant Migration and Copilot Takeoff
Strategize a Smooth Tenant-to-tenant Migration and Copilot TakeoffStrategize a Smooth Tenant-to-tenant Migration and Copilot Takeoff
Strategize a Smooth Tenant-to-tenant Migration and Copilot Takeoff
 
A Domino Admins Adventures (Engage 2024)
A Domino Admins Adventures (Engage 2024)A Domino Admins Adventures (Engage 2024)
A Domino Admins Adventures (Engage 2024)
 
Mastering MySQL Database Architecture: Deep Dive into MySQL Shell and MySQL R...
Mastering MySQL Database Architecture: Deep Dive into MySQL Shell and MySQL R...Mastering MySQL Database Architecture: Deep Dive into MySQL Shell and MySQL R...
Mastering MySQL Database Architecture: Deep Dive into MySQL Shell and MySQL R...
 
presentation ICT roal in 21st century education
presentation ICT roal in 21st century educationpresentation ICT roal in 21st century education
presentation ICT roal in 21st century education
 
Data Cloud, More than a CDP by Matt Robison
Data Cloud, More than a CDP by Matt RobisonData Cloud, More than a CDP by Matt Robison
Data Cloud, More than a CDP by Matt Robison
 
Partners Life - Insurer Innovation Award 2024
Partners Life - Insurer Innovation Award 2024Partners Life - Insurer Innovation Award 2024
Partners Life - Insurer Innovation Award 2024
 
Strategies for Unlocking Knowledge Management in Microsoft 365 in the Copilot...
Strategies for Unlocking Knowledge Management in Microsoft 365 in the Copilot...Strategies for Unlocking Knowledge Management in Microsoft 365 in the Copilot...
Strategies for Unlocking Knowledge Management in Microsoft 365 in the Copilot...
 
Developing An App To Navigate The Roads of Brazil
Developing An App To Navigate The Roads of BrazilDeveloping An App To Navigate The Roads of Brazil
Developing An App To Navigate The Roads of Brazil
 
[2024]Digital Global Overview Report 2024 Meltwater.pdf
[2024]Digital Global Overview Report 2024 Meltwater.pdf[2024]Digital Global Overview Report 2024 Meltwater.pdf
[2024]Digital Global Overview Report 2024 Meltwater.pdf
 
From Event to Action: Accelerate Your Decision Making with Real-Time Automation
From Event to Action: Accelerate Your Decision Making with Real-Time AutomationFrom Event to Action: Accelerate Your Decision Making with Real-Time Automation
From Event to Action: Accelerate Your Decision Making with Real-Time Automation
 

Measurement Scale

  • 1.
  • 2. Definitions : Clifford Woody – Research comprises defining and redefining problems, formulating hypothesis or suggested solutions; collecting, organising and evaluating data ; making deductions and reaching conclusions ; and at last carefully testing the conclusions to determine whether they fit the formulated hypothesis. Research is thus, an original contribution to the existing stock of knowledge making for its advancement
  • 3.
  • 4.
  • 5.
  • 6. Types of Research Descriptive Research : -Is one which describes, records, analyses and interprets the conditions that exist. -It basically describes ‘what is’. -It describes the state of affairs as it exists at present. – The researcher has no control over the variables, he/she can only report what has happened or is happening. 2. Analytical research : - The researcher has to use facts or information already available and analyse these to make a critical evaluation of the material.
  • 7. 3. Applied (Action ) research : - Aims at finding a solution for an immediate problem facing a society or an industrial/business organisation. - Leads to a deeper understanding of the situation by the local people and by the research team. -Examples are – research to identify social, economic or political trends that may affect a particular institution – marketing research – evaluation research etc. 4. Fundamental ( Basic) research : - Is mainly concerned with generalisations and with the formulation of a theory – Gathering knowledge for the sake of knowledge - eg. studies concerning human behaviour.
  • 8. Research concerning some natural phenomenon or relating to pure mathematics are fundamental research Research studies aimed at certain conclusions facing a concrete social or business problem is an example of applied research. 5. Quantitative Research : based on measurement of quantity or amount. It is applicable to phenomenon that can be expressed in terms of quantity 6. Qualitative research : Is concerned with qualitative phenomenon ie. the phenomenon relating to or involving quality or kind. Ex. Motivation research ; Attitude or opinion research – Specially important in behavioral sciences.
  • 9. 7. Conceptual Research : It is related to some abstract ideas or theory – generally used by philosophers or thinkers to develop new concepts or to interpret existing ones – 8. Empirical research : it relies on experience or observation alone – without due regard for system and theory – it is data based research, coming up with conclusions which are capable of being verified by observation or experiment Significance of research: Research inculcates scientific and inductive thinking and it promotes the development of logical habits of thinking and organization It provides the basis for nearly all govt. policies in our economic system
  • 10. - It has its special significance in solving various operational and planning problems of business and industry -It is important for social scientists in studying social relationships and in seeking answers to various social problems. TESTING HYPOTHESIS
  • 11. RESEARCH DESIGN : “ Research Design is the arrangement of conditions for collection and analysis of data in a manner that aims to combine relevance to the research purpose with economy in procedure” - It is the detailed plan of an investigation - It is the conceptual structure within which the research is conducted - It constitutes the blue print for the collection, measurement and analysis of data What – Why – Where – When etc
  • 12. The Research design decisions happen to be in respect of : 1. What is the study about? 2. Why is the study being made? 3. Where will the study be carried out? 4. What type of data is required? 5. Where can the required data be found? 6. What periods of time will the study include? 7. What will be the sample design? 8. What techniques of data collection will be applied? 9. How will the data be analysed? 10. In what style will the report be prepared?
  • 13.
  • 14.
  • 15. 2. Extraneous variable : Independent variables that are not related to the purpose of the study, but may affect the dependent variable are termed as extraneous variable Eg. Children’s gain in social studies achievement and their self-concepts – intelligence. Extraneous variable 3.Experimental Group : A group of elements which is administered some form of experimental treatment is known as the experimental group. 4.Control group : When a group is exposed to usual conditions and which does not receive any experimental treatment are called control group. Eg. Special coaching ; farmers exposed to TV program
  • 16. 5.Treatment : The different conditions under which the experimental groups are put are usually referred to as treatment. Eg. Comparative impact of three varieties of fertilizers on the yield of wheat. 6.Experiment : The process of examining the truth of a statistical hypothesis relating to some research problem. Eg experiemnt to examine the usefulness of a certain newly developed drug. 7.Experimental units: The pre determined plots or the blocks where different treatments are used is known as experimental units.
  • 17.
  • 18.
  • 19. c. The principle of local control :- through this principle we can eliminate the variability due to extraneous factors from the experimental error – grouping (of homogenous units) – blocking – balancing Sampling Design: What is a sample – sampling technique is the selection process – The survey so conducted is the sample survey Sample design: is a definite plan for obtaining a sample from a given population – is the technique or the procedure adopted by the researcher in selecting samples Steps – 1. Type of Universe Assignment – IMPORTANT TYPES OF EXPERIMENTAL DESIGN
  • 20.
  • 21. Scales and Measurements : A scale is a technique to measure some thing. Scaling is used in ordering a series of items along sort of continuum. – they are methods of turning a series of qualitative facts into a quatitative series Measurements are yardsticks – Measurement in research consists of assigning numbers to empirical events in compliance with a set of rules – Hence, measurement is a three part process (1) Selecting observable empirical events (2) Developing a set of mapping rules ie a scheme for assigning numbers (3) Applying mappimg rule to each observation of that event. Example of studying people who attend a auto show
  • 22. Different Scales :( page 223 of ur book) 1. Nominal Scale : It is simply a system of assigning number symbols to events in order to label them – example: assigning numbers to football players in order to identify them – just for convenience – no quantitative value – can not come out with a meaningful value – We use Mode as the measure of Central Tendency – eg. classifying the residents of a city according to religious preferences. 2. Ordinal Scale : The lowest level of the ordered scale that is commonly used is the ordinal scale – This scale places events in order – Eg. Rank orders represent ordinal scales – a student’s rank in his graduation class involves the use of ordinal scale – these scales have no absolute values – all that we can say is that one person is higher or lower in rank on the scale –
  • 23. Ram’s rank is 10 and Mohan’s is 40 – what do you conclude? – If a is greater than b and b is greater than c, then a is greater than c – just mentions greater than or less than , without stating how much greater or less - the appropriate method of central tendency is median 3. Interval Scale: It has the power of nominal and ordinal scale plus one additional strength, the concept of equality of intervals – eg. the interval between 1 and 2 equals the difference between 2 and 3. In this case the intervals are adjusted in terms of some rule that has been established as a basis for making the units equal – these scales can have an arbitrary zero – it lacks a true zero – The Fahrenheit scale is an example of an interval scale – Mean is the appropriate measure of central tendency
  • 24.
  • 25. Characteristics of Sound Measurement : Sound measurement must meet the tests of Validity, Reliability and Practicality Test of Validity : It refers to the extent to which a test measures what we actually wish to measure – it can also be thought of as Utility – validity is the extent to which differences found with a measuring instrument reflect true differences among those being tested. Test of Reliability : A measuring instrument is reliable if it provides consistent results – eg. if a scale is consistently overweighs objects by 5 kgs is a reliable scale but is not a valid scale – Reliability is concerned with estimates of degree to which measurement is free of random or unstable error.
  • 26. Test of Practicality :This can be judged in terms of economy, convience and interpretability Scaling : It is defined as ‘ the procedure for the assignment of numbers ( or symbols) to a property of objects in order to impart some of the characteristics of numbers to the properties in question’. It describes the procedure of assigning numbers to various degrees of opinion, attitudes and other concepts – a scale is a continnum, consisting of the highest point and the lowest point
  • 27. Important Scaling Techniques : Rating Scales : It involves qualitative description of a limited number of aspects of a thing or of traits of a person – we judge properties of objects without reference to other similar objects – these ratings are in the form of “like – dislike”, “excellent-good-average-below average-poor”. In practice three to seven point scales are generally used There are two types of Rating scale- (1) The Graphic Rating Scale : various points are usually put along the line to form a continuum and the rater indicates his rating. Eg. How do you like the product
  • 28.
  • 29. Attitude Scales : Thurstone defined ‘Attitude’ as “the degree of positive or negative feeling associated with some psychological object like symbol, phrase, slogan, person, institution, ideal or ideas towards which people can differ in varying degrees.” While measuring the attitudes of the people, we generally follow the technique of preparing the opinionnaire ( attitude scale) in such a way that the score of the individual responses assigns him a place on a scale. People may conceal their attitudes and express socially acceptable opinions – They may not really know how they feel about a social issue – People may be unaware of their attitude about an abstract situation until confronted with real situation – even behaviour itself is at times not a true indication of attitude. Eg- Politicians kissing babies Is this bevaviour a true expression of affection towards infants? No Hence there is no sure method of measuring attitude.
  • 30.
  • 31. 2. Thurstone Scale ( Differential scale ) : This has been developed using consensus scale approach – In this approach the selection of items is made by a panel of judges who evaluate the items in terms of whether they are relevant to the topic of area. Detailed procedure : 1) The researcher gather a large number of statements, usually 20 or more ; 2) These statements are submitted to a panel of judges ( 50 to 300 judges ), requesting them to classify these statements into eleven groups. Those statements which he/she considers most favourable to the object are put in the first group; those considered next most in the second group ……… those consider most unfavourable in the last group.
  • 32. It may be noted here that only the neutral and the two extreme categories ( most favoured and most unfavoured) on which the statements are to be judged are defined. The remaining eight are unlabelled to create the impression of equal appearing intervals between the three labels. 3) The scale value of a statement is computed as the median position to which it is assigned by the group of judges. 4) A final selection is made taking items or statements that are spread out evenly along the scale from one extreme position to the other and for which there are more judges’ agreement.
  • 33. 3) Summated Scales ( Likert Scale ) This scale consists of a set of items ( statements) to which the subject is asked to react. The respondents are asked to respond to each item in terms of several degrees of agreement or disagreement and the scores may be, for eg. strongly agree - 5 ; agree-4; undecided-3; disagree – 2; and strongly disagree – 1. Total score is obtained when all the weights are summated 4)Semantic Differential (S D) Scale: This is developed by Charles E.Osgood and others in 1957. The word Semantic means relating to meaning in language. SD scaling is an attempt to measure the psychological meanings of an object. This scaling technique is used rather easily in decisional survey research. Its main use has been in connection with comparison of brand and company images, determination of attitudinal characteristics of consumers and analysis of the effectiveness of promotional activities.
  • 34. “ The S D scale is a technique for psychological measuring of things, usually concepts or objects of people. It consists of a series or set of descriptive adjectives or phrases which are polar opposite”. They are generally classified into three categories 1. Evaluative : Good – Bad ; Beautiful – Ugly; Clean – Dirty; Fair-Unfair 2. Potency : Large – Small; Strong – Weak; Thick – Thin; Loud-Soft; Deep – Shallow. 3. Activity : Fast – Slow; Active – Passive; Sharp-Dull. The respondents are asked to describe the concept under investigation according to the set of scales using the method of rating. Thus, the technique enables an investigator to examine both the context and intensity of people’s attitudes.
  • 35. SURVEY RESEARCH : DATA COLLECTION : Primary Data : are collected afresh and for the first time – original in character – we collect primary data during the course of doing experiment in an Experimental Research, but for Descriptive Research , we can obtain primary data either through observation or through direct communication with the respondents. Methods : Observation method : Commonly used in studies relating to behavioural sciences – we all observe many things, but it is not a scientific observation – it will become scientific when it serves a formulated research purpose, is systematically planned and recorded and is subjected to checks and controls on validity and reliability – eg. investigator himself looking at the wrist watch the respondent is using instead of asking with him the brand of wrist watch, child behaviour
  • 36.
  • 37.
  • 38. Clinical Interview : is concerned with broad underlying feelings or motivations or with the course of individual’s life experience – generally left to the interviewer’s discretion Non-directive interview: the interviewer’s function is just to encourage the respondent to talk about the given topic with a bare minimum of direct questioning – interviewer is acting as a catalyst Telephone Interview : Questionnaires Collection of data through Schedules :
  • 39.
  • 40. 3. Pantry Audits : It is used to estimate consumption of the basket of goods at the consumer level – the investigator collects an inventory of types, quantities and prices of commodities consumed – data are recorded from the examination of consumer’s pantry – objective is to find out what type of consumers buy certain products and certain brands – this method may be supplemented by direct questioning relating to reasons and circumstances under which particular products were purchased – to know the purchase habits 4. Consumer Panels : An extension of the pantry audit approach on a regular basis is known as ‘Consumer Panels’ – a set of consumers are arranged to maintain detailed daily records of their consumption and it is made available to the investigator on demand – same consumers are interviewed repeatedly over a period of time – are of two types: a) Transitory consumer panel : Is set up to measure the effect of a particular phenomenon – conducted on a before-and-after basis – to study consumer behaviour and attitude
  • 41. b) Continuing consumer pattern : Is often set up for an indefinite period with a view to collect data on a particular aspect of consumer behaviour over time – radio listening and watching TV. 5. Use of Mechanical devises : Eye camera ( to record the focus the eyes of respondent) Pupilometric camera ( to record dilation of the pupil as a result of a visual stimulus) Psychologalvanometer ( used for measuring the extent of body exitement as result of the visual stimulus Motion picture camera ( to record movement of body of a buyer while deciding to buy consumer goods from a shop – influence of packaging or information given on the label would stimulate a buyer ) Audio meters ( used by TV concerns to find out the type of programmes preferred by the people)
  • 42.
  • 43.
  • 44. limited number of categories or classes. Eg. 1 for male and 2 for female or M for male and F for female. The first one is numeric coding and the second one is alphanumeric coding. Coding helps the researcher to reduce several thousand replies to a few categories containing the critical information needed for analysis. Coding can either be done on the margin of questionnaire or transcribe the data from the questionnaire to a coding sheet. 3. Classification : Reducing raw data into homogenous groups – it is the process of arranging data in groups or classes on the basis of common characteristics a. Classification according to attributes :They are descriptive in nature (qualitative), like literacy, sex, honesty etc. – these can not be measured qualitatively – only their presence or absence in an individual item can be noticed.
  • 45. b.Classification according to class intervals : These refer to quantitative phenomenon which can be measured through some statistical units – eg. data relating to income, production, age, height & weigh etc. 4. Tabulation : It is a concise, logical and orderly arrangement of data in columns and rows – summarising raw data and display them in compact form – it provides a basis for starting statistical comparisons – it could be one way , which furnishes answers to questions about one characteristic of the data only – Two-way, three-way and manifold tables deal with two, three or several interrelated characteristics of the data. These are known as cross-tabulation. Charts and Graphs :
  • 46. REPORT WRITING : Report helps to know what has been done, why it was done, how it was done, what results were obtained and what conclusions and recommendations have been arrived at. It should be written in a clear and unambiguous language so that the readers can objectively judge the adequacy and validity of the research Steps in Report Writing : 1.Logical analysis of the subject matter 2.Preparation of the final outline 3.Preparation of the rough draft 4.Rewriting and polishing of the rough draft 5.Preparation of the final bibliography 6. Wring the final draft
  • 47. Cluster Analysis It is a set of techniques for grouping similar objects or people – originally applied in taxonomy but later extended to economics, marketing etc. – This analysis starts with an undifferentiated group of people, events or objects and attempts to recognise them into homogenous subgroups. - Cluster analysis is used to classify persons or objects into a small number of mutually exclusive and exhaustive groups or clusters. - There should be high internal (Within cluster) homogeneity and high external (between cluster) heterogeneity. - One of the important uses of cluster analysis in marketing is market segmantation. - The main task involved in segmentation is to classify people, materials etc. into groups based on certain common characteristics.
  • 48.
  • 49. Path Analysis : The objective of this analysis is to get a clear picture of the direct and indirect effects of the independent variables on the dependent variable