This document provides an overview of different types of charts used to represent data visually, including line graphs, pie charts, and bar graphs. It explains that charts allow large amounts of numeric data to be interpreted easily and concisely by representing the information graphically. The document describes the basic components and purposes of line graphs for showing trends over time, pie charts for displaying percentages of parts that make up a whole, and bar graphs for comparing quantities across different categories. Examples are given for each type of chart. Readers are encouraged to practice creating charts from their own data sets.

1. 1
Basics:
Creating Charts
Working with
Spreadsheets

2. 2
What is a Chart?

A chart is a graphical
representation of information.

Information presented in
tabular form.

Diagram, Picture, Image

Representation of numbers

3. 3
Why Charts?

Easy for interpretation of large
amounts of numbers

Compact a lot of information in
small area

Make room for easy inference/
conclusion

Can allow for predictions

4. 4
Charting is not straight
forward...
Many types of charts that
are
used for different purposes

Know what data you have

Know what types of charts
exist

Choose appropriate chart
for data

5. 5
Common types of Charts

Line Graphs

Pie Charts

Bar Graphs

6. Line Graphs

A line graph is a way to
summarize how different
pieces of information are
related and how they vary
depending on one another.

The numbers along a side of
the line graph are called the
scale 6

7. 7
cont… Line Graphs

When you want to display
a trend

Charts made up of lines

Each line represent a particular
category

8. cont… Line Graphs
Rose Joseph Richard
0
10
20
30
40
50
60
70
80
90
100
IEDS Computer Literacy Marks
Assignment
Test
8
IEDS Computer Literacy Marks
Name Assignment Test
Rose 79 87
Joseph 68 77
Richard 58 68

9. Pie Charts

A pie chart is a circle graph
divided into pieces

Each displaying the size of
some related piece of
information.

Pie charts are used to display
the sizes of parts that make
up some whole.
9

10. cont… Pie Charts

When you want to
display percentages

Circular Chart

Divided into segments

Each segments represent part
of a whole in percentage

Entire circler presents whole
10

11. cont… Pie Charts
11
IEDS Assignment Marks
Rose
Joseph
Richard
IEDS Computer Literacy Marks
Name Assignment Test
Rose 79 87
Joseph 68 77
Richard 58 68

12. 12
Bar Graphs

Bar graphs consist of an axis
and a series of labelled
horizontal or vertical bars that
show different values for each
bar.

The numbers along a side of
the bar graph are called the
scale.

13. 13
cont… Bar Graphs

When you want to
compare quantities of
different categories

Chart made up of bars

Data grouped into
categories

Frequencies represented on
Y-axis mostly

14. 14
cont… Bar Graphs
Assignment Test
0
10
20
30
40
50
60
70
80
90
100
IEDS Computer Literacy Marks
Rose
Joseph
Richard
IEDS Computer Literacy Marks
Name Assignment Test
Rose 79 87
Joseph 68 77
Richard 58 68

15. 15
Exercise

Think of suitable data for Pi-
chart and create one

Think of suitable data for
Bar- chart and create one

16. 16
More Information

Visit these sites on Charts
and Graphs on the Internet
http://www.strategiccomm.com/usecharts.html -
Using charts
http://www.mathleague.com/help/data/data.htm
- Using Charts
http://www.cas.lancs.ac.uk/glossary_v1.1/presdata.h
- Glossary of statistical terms
http://lilt.ilstu.edu/gmklass/pos138/datadisplay/good
- Constructing good charts