1. SPREADSHEETS
POWERPOINT
An Introduction to Spreadsheets

2. SPREADSHEET

A spreadsheet is an interactive computer
application program for organization and analysis
of data in tabular form. Spreadsheets developed as
computerized simulations of paper
accounting worksheets. The program operates on
data represented as cells of an array, organized in
rows and columns. Each cell of the array is
a model-view-controller element that can contain
either numeric or text data, or the results
of formulas that automatically calculate and display
a value based on the contents of other cells.

3. WHAT CAN SPREADSHEETS DO ?

Spreadsheets allow you to compare one set of
information with another, and display results using
charts and graphs.

Spreadsheets are big tables, which are made up of
rows, columns and cells. In each cell, data can be
inserted and stored, and are capable of performing
calculations using formulas.

4. SPREADSHEETS CAN:
do all sorts of calculations, both simple and
complex, using formulae
 recalculate things quickly when the numbers
change
 use functions to help you set up complex formulae
 act as simple databases so that you can sort or
search your data
 plot charts and graphs
 change the appearance of fonts, cell
backgrounds and borders
 control how many decimal places are shown.


5. MAIN USERS OF SPREADSHEETS
Spreadsheets are similar to Databases, which is why
they are used in the business world by small
companies and specific people.
 Accountants – use spreadsheets to store customer
information on income and expenditures.
 Teachers – use spreadsheets to store information
such as pupil grades
 Engineers – use spreadsheets for calculations
when designing and developing structures for
projects.
 Sales People – they use spreadsheets to keep
track of sales that there company might have.

6. MAIN USERS OF SPREADSHEETS
Scientists – they need to keep track of there results
from there experiments that they have done.
 Supermarkets Head Offices – supermarkets have
to have spreadsheets to record how there company
is doing, i.e. income and outcome, busiest time of
day/month/year so the company know how many
staff they will need that day/month/year.
 Project Managers – project managers and their
clients use spreadsheets to meet their deadlines.
 Event Organizers – events can be planned easily
through spreadsheet.w


7. TYPES OF SPREADSHEETS
Cloud and On-line Spreadsheets
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Sheetster
Simple Spreadsheet
Tiki Wiki CMS Groupware
wikiCalc (now called SocialCalc)
Standalone spreadsheets
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Bean Sheet
GNU Oleo
Kingsoft Spreadsheets

8. TYPES OF SPREADSHEETS
Online spreadsheets
 EditGrid – access, collaborate and share spreadsheets
online, with API support.
 Google Spreadsheets – as part of Google Docs &
Spreadsheets with API support.
 JotSpot Tracker – acquired by Google Inc.
 Spreader – Free service that converts OpenOffice Excel
spreadsheets into web .NET applications.
 Smartsheet – Online spreadsheet for project
management, interactive Gantt, file sharing, integrated
with Google Apps
 ThinkFree Online Calc – as part of the ThinkFree Office
online office suite, using Java

9. SPREADSHEET MANIPULATION
Spreadsheets can be manipulated in order
to produce a specific outcome. This can be
anything from using formulas in cells to
setting a spreadsheet out in a certain way.
For example a teacher who uses a
spreadsheet to store test results can manipulate
the data to produce a graph.

10. DATA MINING/PREDICTIVE MODELLING
Data Mining is the process of analyzing large
amounts of data in order to find patterns
and trends. When found, these patterns and
trends can be used to cut expenses and
increase revenue.
Predictive modelling is similar to data mining, as it
analyzes large amounts of data but uses the
results to predict future income and outcome.

11. COMPLEX PROBLEMS
A complex problem that can be solved using
a spreadsheet is totalling profit and loss for
a company. A spreadsheet can total
together expenditures of a month using
formulas, and then use those totals to total
expenditures of numerous months using
macros (Linking Spreadsheets together).