A variable x x\,x was measured to the nearest whole number. 50 observations are given in the table below.
| xxx | 8 – 11 | 12 – 16 | 17 – 24 | 25 – 29 |
|---|---|---|---|---|
| Frequency | 9 | 10 | 15 | 16 |
A histogram was drawn and the bar representing the 12 – 16 class has a width of 2 cm and a height of 3.2 cm.
Find the width and height of the bar representing the 17 – 24 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.