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 \(36^{\circ}\).

Here is the data for the ages of customers shopping in the Bitesize CD store. Ages of customers in 1-hour period 25, 29, 45, 19, 36, 17, 60, 51, 39, 24, 15, 13, 31 ...