O-LevelMathematicsStatistics4024/11 · Oct/Nov 2019 · Q21 Mark

The scatter diagram shows the marks that 12 students each obtained in test A and test B. [Figure X.X - scatter diagram] Give a reason why it is not appropriate to draw a line of best fit for this diagram.

The scatter diagram shows the marks that 12 students each obtained in test A and test B. [Figure X.X - scatter diagram] Give a reason why it is not appropriate to draw a line of best fit for this diagram.[1]

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Mark scheme

Marking points from the official mark scheme (Oct/Nov 2019). The mark or mark type is shown in brackets.

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Topic: Statistics, O-Level Mathematics (syllabus 4024). Structured question, 1 mark.
Source: O-Level Mathematics, Oct/Nov 2019 Paper 1 Variant 1, question 2.

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