4MA1/1H Jun 2019, Question 19: Histograms (Unequal Class Intervals)
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1H (Higher) · Calculator · 3 marks
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The question, in short
Using the grouped height and frequency table, draw a histogram on the given grid with frequency density plotted against height h in metres.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 3 marks
- 1Frequency density = frequency ÷ class width
- 215 ÷ 20 = 0.75, 48 ÷ 15 = 3.2, 21 ÷ 5 = 4.2, 16 ÷ 10 = 1.6
- 3Bars at frequency densities 0.75 from 0 to 20, 3.2 from 20 to 35, 4.2 from 35 to 40 and 1.6 from 40 to 50
AnswerBars at frequency densities 0.75 from 0 to 20, 3.2 from 20 to 35, 4.2 from 35 to 40 and 1.6 from 40 to 50
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