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What is Understanding Pie Charts and Variants about?
A pie chart (or circle chart) is a circular graphic divided into slices to show proportional data. The arc length of each slice represents the quantity and central angle proportionally. Pie charts show proportions but can be difficult to compare, so alternatives like bar charts are often preferable. The earliest pie chart is credited to William Playfair in 1801, though Florence Nightingale adapted it to be more readable. Variants include doughnut, exploded, 3D, polar area, and hierarchical ring/sunburst cha
- Author
- amelia99
- Language
- EN