Lecture 7 creating_charts1

1
Basics:
Creating Charts
Working with
Spreadsheets

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

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

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

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

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

cont… Pie Charts
11
IEDS Assignment Marks
Rose
Joseph
Richard
Rose 79 87
Joseph 68 77
Richard 58 68

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
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
cont… Bar Graphs
Assignment Test
0
10
20
30
40
50
60
70
80
90
100
Rose
Joseph
Richard
Rose 79 87
Joseph 68 77
Richard 58 68

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

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

Lecture 7 creating_charts1

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