4024/12 May/Jun 2024, Question 21: Histograms (Unequal Class Intervals)
Cambridge O Level Mathematics 4024 · Paper 12 (Non-calculator) · Non-calculator · 3 marks
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The question, in short
Using the table of heights for 180 sunflowers, complete a histogram on the given axes, where the 100 < h ≤ 120 bar already has height 1.4.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 3 marks
- 1Frequency density = frequency ÷ class width
- 2120 < h ≤ 140: 60 ÷ 20 = 3
- 3140 < h ≤ 150: 68 ÷ 10 = 6.8
- 4150 < h ≤ 160: 24 ÷ 10 = 2.4
- 5Draw bars of heights 3, 6.8 and 2.4 over these intervals
AnswerCorrect histogram
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Also searched as: 4024/12/M/J/24 · 4024_s24_qp_12 · 4024 s24 12 · question 21.
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