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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 2
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Frank asked every teacher at his school how long it took them to travel to work. Frank's results are summarised in the summary statistics below.

n=70∑x=1587Sxx=4879 n = 70 \quad \sum x = 1587 \quad S_{xx} = 4879 n=70∑x=1587Sxx​=4879

Calculate the mean and the standard deviation for these data.

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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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