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2.2.3 Central tendency, variation and standard deviation

2.2.3 Central tendency, variation and standard deviation

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Question 4
57%

The times 12 athletes took to run 400m is summarised in the table below.

AthleteABCDEFGHAIJK
Time (s)45.246.946.146.245.445.147.845.445.546.146.445.7
a.

Find the mean time taken.

[2]
b.

Find the standard deviation for these times.

[2]
c.

Find the median, upper and lower quartiles of these data.

[3]
Markscheme

2.2.3 Central tendency, variation and standard deviation Questions

  1. A Level
  2. /Maths
  3. /2.2.3 Central tendency, variation and standard deviation

39 exam-style questions on AQA A Level Maths 2.2.3 Central tendency, variation and standard deviation. Each one has a worked solution and a mark scheme showing where the marks go.

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