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Basics:Creating Charts

Working withSpreadsheets

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What is a Chart?

A  chart  is  a  graphical  representation of  information.

Information presented in tabular form.

Diagram, Picture, Image Representation of numbers

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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

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Charting is not straight forward...

Many  types  of  charts  that  are  

used  for  different  purposesKnow what data you haveKnow what types of charts exist

Choose appropriate chart for data

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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

The other are Labels6

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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 Richard0

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IEDS Computer Literacy Marks

Assignment

Test

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IEDS Computer Literacy Marks

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.

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cont… Pie ChartsWhen you  want  to  display percentages

Circular Chart Divided into segments Each segments represent part of a whole in percentage

Entire circler presents whole10

cont… Pie Charts

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IEDS Assignment Marks

Rose

Joseph

Richard

IEDS Computer Literacy Marks

Name Assignment Test

Rose 79 87

Joseph 68 77

Richard 58 68

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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.

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cont… Bar Graphs

When  you  want  to compare quantities of different categories

Chart made up of barsData grouped into categories

Frequencies represented on Y-axis mostly

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cont… Bar Graphs

Assignment Test0

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

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Exercise

Think of suitable data for Pi- chart and create one

Think of suitable data for Bar- chart and create one

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More Information

Visit these sites on Charts and Graphs on the Internethttp://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.html - Glossary of statistical terms http://lilt.ilstu.edu/gmklass/pos138/datadisplay/goodcharts.htm - Constructing good charts