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单词 Rose diagram
释义

Rose diagram

英语百科

Pie chart

Pie chart of populations of English native speakers
Pie charts from William Playfair's "Statistical Breviary", 1801
One of the pie charts, 1801
Minard's map, 1858

A pie chart (or a circle chart) is a circular statistical graphic, which is divided into slices to illustrate numerical proportion. In a pie chart, the arc length of each slice (and consequently its central angle and area), is proportional to the quantity it represents. While it is named for its resemblance to a pie which has been sliced, there are variations on the way it can be presented. The earliest known pie chart is generally credited to William Playfair's Statistical Breviary of 1801.

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