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Pie Chart Practice

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Pie Chart Practice

Read the data carefully. Show working for calculations. For the drawing task, use a protractor and label every sector.

Reading pie-chart data

At a swimming carnival, 40 students voted for their favourite event. The table shows the results. The pie diagram shows the size of the freestyle sector; use the table for the event labels and other values.

Event

Votes

Freestyle

Backstroke

Breaststroke

Relay

1.Which swimming event received the greatest number of votes?

Freestyle
Backstroke
Breaststroke
Relay

2.What percentage of the students chose relay?

3.How many students chose either backstroke or breaststroke?

4.Calculate the angle for the backstroke sector in a pie chart. Show your calculation.

5.What angle should the breaststroke sector have?

36°
54°
72°
108°

Calculate and create a pie chart

The carnival helpers recorded how 24 volunteers travelled to the pool. Use this information for the next tasks.

Travel method

Volunteers

Walk

Bus

Car

Bicycle

6.Work out the angle for each travel method. Give one calculation for each category.

7.Draw a pie chart for the 24 volunteers' travel choices. Label each sector and use the angles you calculated.

8.Which travel method should occupy the largest sector of the volunteers' pie chart?

9.What percentage of volunteers walked or cycled to the pool?

10.Arjun says the bus sector is one quarter of the pie because 6 of the 24 volunteers took the bus. Is he correct? Explain using a percentage or an angle.