O-LevelMathematicsStatistics4024/12 · Oct/Nov 2019 · Q144 Marks
The temperatures, in °C, of 120 people were measured. The results are summarised in the cumulative frequency diagram. [Figure X.X]
- (a)the 20th percentile,[2]
- (b)the number of people with a temperature between 36.8°C and 37.0°C.[2]
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 2019). The mark or mark type is shown in brackets.
- [2] (a) 36.6 cao M1 for 20th percentile = 24 soi
- [2] (b) 36 or 37 or 38 M1 for 100 people < 37.0 soi or 62 or 63 or 64 people < 36.8 soi
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