Get your news from a source that’s not owned and controlled by oligarchs. Sign up for the free Mother Jones Daily. These days, perhaps the most hotly debated issue in climate change circles has little ...

Since it is tax day I chose a chart from the IRS for my comments today. Figure 1 shows the chart with the labels cropped out. The wedges of a pie chart add to 100%. Please estimate the percentage of ...

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.