To draw a pie chart, we need to represent each part of the data as a proportion of 360, because there are \(360^{\circ}\) in a circle. For example, if 55 out of 270 vehicles are vans, we will ...

Once raw data has been collected, you need to represent it in a diagram. Two ways of doing this are to use a pie chart or frequency diagram. In a survey, 100 school students were asked to name their ...

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.

Excel displays percentages of a whole using pie charts, also known as wedge charts of circle graphs. Businesses tend to rely on such charts. The diagrams appear cluttered when graphing many items, and ...