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 ...

A pie chart can show collected data in sectors. Each sector can be labelled, or can be colour coded with a key. When drawing a pie chart, a protractor will be used to draw the angles accurately. Being ...

March 14 is International Pi Day, an annual celebration of the mathematical constant used in calculating the diameter and area of a circle. Often, these celebrations involve pie. Over here at ...

calculate the chart statistic for each midpoint (the default is FREQ). scale each slice to represent its chart statistic. No slice is drawn if the chart statistic for the midpoint is 0. order the ...

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.