O-LevelMathematicsStatistics4024/12 · Oct/Nov 2024 · Q184 Marks
Lin records the masses, in grams, of 60 onions. The cumulative frequency diagram shows her results. [Figure with a cumulative frequency diagram]
- (a)Use the diagram to find an estimate for the interquartile range.[2]
- (b)An onion is large if its mass is at least N grams. 24 of the 60 onions are large. Find the value of N.[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 2024). The mark or mark type is shown in brackets.
- [2] 95
- [2] B1 for [UQ =] 300 or [LQ =] 205 seen
- [2] 260
- [2] B1 for 36 seen or 60 – 24 seen
- [2] or for 260 seen not as final answer
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