Pie Chart - short version

Chart used to describe data from relative frequency distributions with a circle divided into portions whose area is equal to the relative frequency distribution.

Pie Chart - long version

A pie chart (or a circle graph) is a circular chart divided into sectors, illustrating proportion. In a pie chart, the arc length of each sector (and consequently its central angle and area), is proportional to the quantity it represents. When angles are measured with 1 turn as unit then a number of percent is identified with the same number of centiturns. Together, the sectors create a full disk. It is named for its resemblance to a pie which has been sliced.

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