The distance ddd, in kilometres, travelled by each of 40 cyclists was measured to the nearest whole kilometre. The results are given in the table below.
| ddd | 5 - 11 | 12 - 15 | 16 - 21 | 22 - 24 |
|---|---|---|---|---|
| Frequency | 14 | 10 | 9 | 7 |
A histogram was drawn and the bar representing the 5 - 11 class has a width of 2.8 cm and a height of 5 cm.
Find the width and height of the bar representing the 12 - 15 class.
Find the width and height of the bar representing the 16 - 21 class.
28 exam-style questions on Edexcel AS Level Maths Representations of Data, covering 3.1 Outliers, 3.2 Box Plots, 3.3 Cumulative Frequency, 3.4 Histograms, and 3.5 Comparing Data. Each one has a worked solution and a mark scheme showing where the marks go.