Pie charts are a way to show data. Pie charts show proportions of a whole. The circle of the pie chart represents the whole. That's a full 360 degrees. Each part, or slice, represents part of the ...

Editor’s Note: We’ve been looking at inequality quite a bit lately. In the piece ‘Land of the Free, Home of the Poor,’ we used a trio of pie charts broken down into five quintiles to illustrate ...

March 14th is “Pi Day”, for reasons which should be obvious to our more mathematically inclined readers. As you are not reading this post on March 14th, that must mean we’re either fashionably late to ...

A group of middle school girls is puzzling over a pie chart about reading habits in the U.S. Their "math designer" stands at ...

Pie charts are a way to show data. Pie charts show proportions of a whole. The circle of the pie chart represents the whole. That's a full 360 degrees. Each part, or slice, represents part of the ...

Editor's Note: We've been looking at inequality quite a bit lately. In the piece 'Land of the Free, Home of the Poor,' we used a trio of pie charts broken down into five quintiles to illustrate ...