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O-LevelMathematicsStatistics4024/12 · Oct/Nov 2016 · Q123 Marks

A school recorded the number of absent students over a 50-day period. The results are given in the table. Number of absent students | 0 | 1 | 2 | 3 | 4 | 5 or more Number of days | 25 | 15 | 6 | 3 | 1 | 0

  1. (a)Write down the mode.[1]
  2. (b)Calculate the mean.[2]

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2016). The mark or mark type is shown in brackets.

  1. [1] (a) 0
  2. [2*] (b) 0.8 oe
  3. M1 for (15×1 + 6×2 + 3×3 + 4×1)/50

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About this question

Topic
Statistics, O-Level Mathematics (syllabus 4024). Structured question, 3 marks.
Source
O-Level Mathematics, Oct/Nov 2016 Paper 1 Variant 2, question 12.

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