02 descriptive statistics
2.0 Introduction 2.1 Objectives 2.2 Meaning of Descriptive Statistics 2.3 Organisation of Data 2.3.1 Classification 2.3.1.1 Frequency Distribution can be with Ungrouped Data and Grouped Data 2.3.1.2 Types of Frequency Distribution 2.3.2 Tabulation 2.3.3 Graphical Presentation of Data 2.3.3.1 Cumulative Frequency Curve or Ogive 2.3.4 Diagrammatic Presentation of Data 2.4 Summarisation of Data 2.4.1 Measures of Central Tendency 2.4.2 Measures of Dispersion 2.4.3 Skewness and Kurtosis 2.4.4 Advantages and Disadvantages of Descriptive Statistics 2.5 Meaning of Inferential Statistics 2.5.1 Estimation 2.5.2 Point Estimation 2.5.3 Interval Estimation 2.6 Hypothesis Testing 2.6.1 Statement of Hypothesis 2.6.2 Level of Significance 2.6.3 One Tail and Two Tail Test 2.7 Errors in Hypothesis Testing 2.7.1 Type I Error 2.7.2 Type II Error 2.7.3 Power of a Test 2.8 General Procedure for Testing A Hypothesis
