A histogram shows continuous data, such as different age groups, and therefore the bars are drawn without gaps between them. The pie chart below shows the estimated population of Europe in 2021.

Pie charts are often the first pick when it comes to presenting data with different categories, such as age group or blood type. These categories are represented as slices, with the size of each ...

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.