A data set that occurs frequently consists of the values or the percentage breakdown of several categories for two time periods. A common way of plotting these data is to use a pair of pie charts.

Emily Long is a freelance writer based in Salt Lake City. After graduating from Duke University, she spent several years reporting on the federal workforce for Government Executive, a publication of ...

Edward Tufte hates pie charts. Edward Tufte is also the only chart theorist normal people have ever heard of. And so yesterday the Internet was gripped with anti-pie fervor. My friend Tom Lee sticks ...

The pie chart is easily the worst way to convey information ever developed in the history of data visualization. Sure, there are other more cumbersome ways to articulate data. But none have the ...

Pie charts help people display complex data in a colorful, organized and compact way. Microsoft Word comes with several pie charts that you can fill with data manually. Manual data entry is fine, but ...