Pie charts

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A pie chart is a chart represented by a circle. It shows the proportion of each group at a glance. Remember that there are 360° in a circle so each group in the pie chart will be a proportion of 360°.

A survey of the number of people travelling in a vehicle is taken.

The results are in the table below.

People travelling in a vehicle	Frequency
1 person	120
2 people	40
3 people	13
4 people	5
5 or more	2
Total	180

People travelling in a vehicle	1 person
Frequency	120

People travelling in a vehicle	2 people
Frequency	40

People travelling in a vehicle	3 people
Frequency	13

People travelling in a vehicle	4 people
Frequency	5

People travelling in a vehicle	5 or more
Frequency	2

People travelling in a vehicle	Total
Frequency	180

To draw a pie chart for this data, find the proportion of 360.

People travelling in a vehicle	Frequency	Calculation	Angle
1 person	120	\(\frac{120}{180} \times 360°\)	240°
2 people	40	\(\frac{40}{180} \times 360°\)	80°
3 people	13	\(\frac{13}{180} \times 360°\)	26°
4 people	5	\(\frac{5}{180} \times 360°\)	10°
5 or more	2	\(\frac{2}{180} \times 360°\)	4°
Total	180

People travelling in a vehicle	1 person
Frequency	120
Calculation	\(\frac{120}{180} \times 360°\)
Angle	240°

People travelling in a vehicle	2 people
Frequency	40
Calculation	\(\frac{40}{180} \times 360°\)
Angle	80°

People travelling in a vehicle	3 people
Frequency	13
Calculation	\(\frac{13}{180} \times 360°\)
Angle	26°

People travelling in a vehicle	4 people
Frequency	5
Calculation	\(\frac{5}{180} \times 360°\)
Angle	10°

People travelling in a vehicle	5 or more
Frequency	2
Calculation	\(\frac{2}{180} \times 360°\)
Angle	4°

People travelling in a vehicle	Total
Frequency	180
Calculation
Angle

Pie chart showing number of people travelling in a vehicle

Representing data - EdexcelPie charts

Pie charts

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