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O-LevelMathematicsStatistics4024/11 · Oct/Nov 2015 · Q123 Marks

A group of five numbers has a mean of 3.8 and a median of 3. The numbers 3 and 6 are added to the group.

(a)Find the mean of the seven numbers.[2]
(b)Find the median of the seven numbers.[1]

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2015). The mark or mark type is shown in brackets.

[2] (a) 4 WWW
[2] M1 for (3.8 × 5) soi by 19
[1] (b) 3

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About this question

Topic: Statistics, O-Level Mathematics (syllabus 4024). Structured question, 3 marks.
Source: O-Level Mathematics, Oct/Nov 2015 Paper 1 Variant 1, question 12.

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