The distances travelled, to the nearest mile, by 100 people to an event are summarised in the table below.
| Distance (miles) | 1–9 | 10–14 | 15–18 | 19–20 | 21–25 |
|---|---|---|---|---|---|
| Frequency | 5 | 19 | 41 | 26 | 9 |
A histogram is drawn. On the histogram, the bar representing the class 10–14 has a width of 3 cm and a height of 1.9 cm.
Find the width and the height of the bar representing the class 15–18.
Find the width and the height of the bar representing the class 19–20.
244 exam-style questions on AQA A Level Maths 2.2 L: Data presentation and interpretation, covering 2.2.1 Single-variable data diagrams, 2.2.2 Scatter diagrams and correlation, 2.2.3 Central tendency, variation and standard deviation, 2.2.4 Outliers and cleaning data, and 2.2 L: Data presentation and interpretation. Each one has a worked solution and a mark scheme showing where the marks go.