Distances, recorded to the nearest mile, have frequencies 4, 19, 41, 26 and 9 in the classes 0–9, 10–14, 15–18, 19–20 and 21–25. On a printed histogram, the 10–14 bar is 3 cm wide and 1.9 cm high.
Find the printed width and height of the 15–18 bar.
Find the printed width and height of the 19–20 bar.
105 exam-style questions on WJEC A Level Maths 2.2 Data presentation and interpretation, covering 2.2.1 Data presentation and interpretation, 2.2.2 Data presentation and interpretation, 2.2.3 Data presentation and interpretation, 2.2.4 Data presentation and interpretation, 2.2.5 Data presentation and interpretation, 2.2.6 Data presentation and interpretation, 2.2.7 Data presentation and interpretation, 2.2.8 Data presentation and interpretation, and 2.2 Data presentation and interpretation. Each one has a worked solution and a mark scheme showing where the marks go.