A variable x x\,x was measured to the nearest whole number. The 50 observations are summarised in the table below.
| xxx | 5–8 | 9–13 | 14–20 | 21–24 |
|---|---|---|---|---|
| Frequency | 10 | 9 | 14 | 17 |
A histogram is drawn. On the histogram, the bar representing the class 9–13 has a width of 2 cm and a height of 2.7 cm.
Find the width and the height of the bar representing the class 14–20.
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.