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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 9

The CO emission x x\,x g/km of each of 50 cars is recorded. For these cars,

∑x=12.5\sum x = 12.5∑x=12.5 and ∑x2=3.205\sum x^2 = 3.205∑x2=3.205

Calculate the mean and the standard deviation of these CO emissions.

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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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