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2.5.11 Inference using a correlation coefficient (A-level only)

2.5.11 Inference using a correlation coefficient (A-level only)

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Question 23

The age and the market value of 12 second-hand cars are recorded.

a.

Suggest a null and alternative hypothesis for a two tailed test to investigate whether there is a correlation between the age of a car and its market value.

[2]
b.

The product moment correlation coefficient is calculated to be r=−0.68r = -0.68r=−0.68.

Test your hypotheses at the 1% significance level.

[2]
Markscheme

2.5.11 Inference using a correlation coefficient (A-level only) Questions

  1. A Level
  2. /Maths
  3. /2.5.11 Inference using a correlation coefficient (A-level only)

47 exam-style questions on OCR (MEI) A Level Maths 2.5.11 Inference using a correlation coefficient (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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