Last week via our Twitter account, @NPRFood, we learned that an enterprising Australian baker with a taste for data visualization had gone looking for hard data to make an edible pie chart.

It wouldn't be National Pi Day at Wonkblog without some pie charts to mark the momentous occasion. The versatile chart can be used in all sorts of situations. Like to figure out how much pie one ...

Pie charts are a great way to present numerical data because they make comparing the magnitude of various numbers quick and easy, while also making the larger data set appreciable at a glance.