A pie chart is quite a popular way for newspapers and websites to present data. It is useful because it quickly shows the relative proportions represented by different categories.

Worked Example

Your teacher will draw a pie chart showing how Masha spends her £12 of pocket money. Calculate how much she spends on each item and how much she saves.

Exercise 1

Drawing a pie chart

To draw a pie chart, we first need to calculate what angle is needed in each of the different categories’ sectors.

Then we can use a pair of compasses to draw a circle, mark a radius on it, then use a protractor to measure out the different angles from that radius.

Worked Example

Let’s practice this to draw a pie chart for the following information of how 80 students travel to school:

Tranport	Walk	Bus	Car	Bicycle
Number of Students	40	20	10	10

Exercise

Answers