The distance travelled by 100 people to an event is summarised below.
| Distance (nearest mile) | Frequency |
|---|---|
| 0–9 | 8 |
| 10–14 | 29 |
| 15–18 | 37 |
| 19–20 | 22 |
| 21–25 | 4 |
A histogram was drawn and the bar representing the 10–14 class has a width of 3 cm and a height of 2.9 cm.
Find the scale factors for the width and height of the bars.
Hence 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.