The distance travelled by 100 people to an event is summarised below.
| Distance (nearest mile) | Frequency |
|---|---|
| 0 – 9 | 4 |
| 10 – 14 | 19 |
| 15 – 18 | 41 |
| 19 – 20 | 26 |
| 21 – 25 | 9 |
A histogram was drawn and the bar representing the 10 – 14 class has a width of 3 cm and a height of 1.9 cm.
Show that the vertical scale is 0.5 cm per unit of frequency density.
Find the width and height of the bar representing the 15 – 18 class.
Find the width and height of the bar representing the 19 – 20 class.
160 exam-style questions on Edexcel A 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.