To display a record of information in a graphical interface, pie charts, bar diagrams, and other such chart diagrams are the best ways to present or communicate information visually. If you don’t have ...

Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter. “There is no such thing as an innocent map,” observes Philippe Rekacewicz in his catalogue essay that ...

The pie chart below shows the heights (in \(cm\)) of 30 pupils in a class. The biggest slice of the pie chart contains the most people: \( 151 - 160cm\). The angle of this sector is \(36^{\circ}\).

Pie charts are drawn as a circle representing all the data given. The 360 degrees about the centre of the circle is divided up according to the proportions of the different quantities shown. The ...