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2.5.3 Data presentation and interpretation

2.5.3 Data presentation and interpretation

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Question 2

For 20 values, ∑x=300\sum x=300∑x=300 and ∑x2=4800\sum x^2=4800∑x2=4800. A value of 8 was incorrectly recorded as 18.

Calculate the corrected variance.

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Markscheme

2.5.3 Data presentation and interpretation Questions

  1. A Level
  2. /Maths
  3. /2.5.3 Data presentation and interpretation

8 exam-style questions on CCEA A Level Maths 2.5.3 Data presentation and interpretation. Each one has a worked solution and a mark scheme showing where the marks go.

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