Statistics: pie charts, bar charts and averages

Question 1 of 10

The favourite foods of 72 pupils were: rice 24, banku 11, kenkey 17, yam 20. (a) Calculate the angle of each sector of a pie chart. (b) Draw the pie chart. (c) What percentage of the pupils chose rice?

Question 2 of 10

In a survey of 40 pupils, 12 chose football. What angle represents football on a pie chart?

Question 3 of 10

In a survey of 72 pupils, 21 chose football. What angle represents football on a pie chart?

Question 4 of 10

The mean of a frequency table is calculated as

Question 5 of 10

The number of children in some families is shown: 1 child (f = 1), 2 (f = 7), 3 (f = 7), 4 (f = 8), 5 (f = 6). Find the mean number of children, to 2 decimal places.

Question 6 of 10

In a survey of 72 pupils, 34 chose football. What angle represents football on a pie chart?

Question 7 of 10

Which graph is best for showing how a pupil's weight changed over 12 months?

Question 8 of 10

The mode can be found from the tallest bar of a bar chart.

Question 9 of 10

A pie chart shows the favourite foods of 120 pupils. Jollof rice has an angle of 120°. How many pupils chose jollof rice?

Question 10 of 10

The class with the highest frequency in grouped data is the