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Cambridge Mathematics 9: Presenting and interpreting data

10 questions with solutions on the Cambridge Mathematics 9 topic: pie charts, scatter graphs and correlation, bar charts, comparing distributions.

Type the number or choose the right answer. When you finish, click Check answers and see the solutions.

1. Of 30 pupils, 5 like red. How many degrees is that sector in a pie chart?

2. What fraction of the whole is a 90° sector of a pie chart?

3. A pie chart shows 120 people. How many people does a 45° sector show?

4. Height and shoe size: taller people usually have bigger feet. What correlation is this?

5. Outdoor temperature and heating cost. What correlation is this?

6. In a frequency polygon, where is each point plotted for a group?

7. Which graph is best for the change in temperature during a day?

8. The bars of a bar chart are 4, 7, 3 and 6 high. How many items of data are there in total?

9. Class A has a range of 12, class B a range of 5 (same mean). Which class has more consistent results?

10. Pupils in the library: Mon 4, Tue 9, Wed 6. Which day is the mode?