When drawing a pie chart ... the pupils whose favourite hobby is playing video games is 20% of the pie chart. Number of pupils = 20% of 660 = 0.20 × 660 = 132. One hundred and thirty-two students ...

Numbers aren't that interesting when spoken about. But when your team can see the data laid out in a visual format, suddenly it all makes sense. Pie charts are a great way to present numerical ...