Until now. The Prison Policy Initiative put together this amazing pie chart that lets you take in all 2.4 million prisoners at a glance.

The angles can be used to work out what proportion of the whole population a pie chart sector represents. These fractions would be out of 360°, the number of degrees in a full turn.

The Boise area — and Idaho as a whole — became significantly more diverse during the 2010s, according to data from the U.S. Census Bureau. Idaho was the second-fastest-growing state in the ...

Learn about pie charts with this BBC Bitesize Maths article. ... The angles can be used to work out what proportion of the whole population a pie chart sector represents.