O-LevelMathematicsStatistics4024/11 · Oct/Nov 2018 · Q133 Marks
The lengths of the times of telephone calls made by Ellie during one week are summarised in the table. Time (t minutes) | 0 < t ≤ 10 | 10 < t ≤ 20 | 20 < t ≤ 25 | 25 < t ≤ 30 | 30 < t ≤ 50 Frequency | 10 | 15 | 10 | 12 | 16 [Table 13.1]
- On the grid, draw a histogram to illustrate the distribution of these times.[3]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2018). The mark or mark type is shown in brackets.
- 13 Correct histogram with Freq. densities 1, 1.5, 2, 2.4, 0.8 [3]
- B1 for 4 or more rectangles on correct bases.
- B1 for 4 or more correct Freq. densities, soi.
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