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Pie charts

A pie chart gets its name because (surprise, surprise) it looks like a pie – a circle divided into slices of various sizes. It shows you at a glance which groups among the data are the biggest and smallest, and the size of the angle at the point of each slice tells you how big the group it represents is.

The three things you may have to do with a pie chart in a numeracy test are to convert between the angle and the size of each group, percentages and the size of each group, and the angles and percentages.

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