A variable xxx, measured to the nearest integer, has frequencies 10, 9, 14 and 17 in the classes 5–8, 9–13, 14–20 and 21–24. On a printed histogram, the 9–13 bar is 2 cm wide and 2.7 cm high.
Find the printed width and height of the 14–20 bar.
8 exam-style questions on OCR (MEI) A Level Maths 2.2.2 Area in a histogram is proportional to frequency. Each one has a worked solution and a mark scheme showing where the marks go.