4024/11 May/Jun 2023, Question 24: Histograms (Unequal Class Intervals)
Cambridge O Level Mathematics 4024 · Paper 11 (Non-calculator) · Non-calculator · 3 marks
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The question, in short
Use the grouped frequency table for 100 batteries to complete a histogram of lifetime in hours, with one bar already drawn.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 3 marks
- 1Frequency density = frequency ÷ class width
- 210 < t ≤ 15: 10 ÷ 5 = 2
- 321 < t ≤ 30: 36 ÷ 9 = 4
- 430 < t ≤ 50: 30 ÷ 20 = 1.5
- 5Draw bars of these heights on these bases
Answer3 columns correctly drawn
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Also searched as: 4024/11/M/J/23 · 4024_s23_qp_11 · 4024 s23 11 · question 24.
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