A variable was measured to the nearest whole number.
| Recorded value | 5–8 | 9–13 | 14–20 | 21–24 |
|---|---|---|---|---|
| Frequency | 10 | 9 | 14 | 17 |
A histogram is drawn. The bar for 9–13 has width 2 cm and height 2.7 cm. Find the width and height of the bar for 14–20.
121 exam-style questions on OCR A Level Maths 2.2 Data Presentation and Interpretation, covering 2.2.1 Tables and diagrams for single variable data, 2.2.2 Area in a histogram, 2.2.3 Scatter diagrams and regression lines, 2.2.4 Informal interpretation of correlation, 2.2.5 Correlation and causation, 2.2.6 Measures of average and spread, 2.2.7 Calculations of mean and standard deviation, 2.2.8 Outliers, 2.2.9 Selecting or critiquing data presentation, and 2.2.10 Cleaning data. Each one has a worked solution and a mark scheme showing where the marks go.