O-LevelMathematicsStatistics4024/12 · May/June 2023 · Q73 Marks
Ben walks for exercise. The scatter diagram shows the distance for 10 walks and the time each walk takes. [Figure X.X]
- (a)Write down the type of correlation that the scatter diagram shows.[1]
- (b)Draw a line of best fit.[1]
- (c)Use your line of best fit to estimate the time Ben takes for a 5 km walk.[1]
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 (May/June 2023). The mark or mark type is shown in brackets.
- 7(a) Positive
- 7(b) Ruled line of best fit
- 7(c) Reading from their straight line at d = 5
- 7(c) FT dependent on positive gradient
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