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Histogram or Bar Chart
...
These graphs use columns to show the variable. In the histogram below each column represents the mass of water lost by a plant over a four hour period.
 

The Pie Chart
...
Pie charts are quite easy to draw. You need a compass and a protractor. Pie charts are used to show proportions, for example percentages. the whole disc of the pie chart represents 100%. A circle is divided into 360 degrees which you can measure using your protractor.

1% = 3,6 degrees
10% = 3,6 x 10 = 36 degrees
25% = 3,6 x 25 = 90 degrees
and so on

The first pie chart shows the diet of a Leopard seal.
The Diet of a Leopard Seal

The second pie chart shows the diet of a Stellar Sea Lion

The Diet of a Stellar Sea Lion

 
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This Site was last
updated on 04/01/08
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© Paul Billiet and Shirley Burchill 2008