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

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Question 8

The amount of daily rainfall and the maximum wind speed recorded on 15 randomly selected days in a coastal town yielded a product moment correlation coefficient of $r = 0.525$ .

Stating your hypotheses clearly test, at the 5% significance level, whether there is evidence of a positive correlation between daily rainfall and maximum wind speed.

[4]

Markscheme

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

A Level
Maths
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.

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

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

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Question 8

The amount of daily rainfall and the maximum wind speed recorded on 15 randomly selected days in a coastal town yielded a product moment correlation coefficient of $r = 0.525$ .

Stating your hypotheses clearly test, at the 5% significance level, whether there is evidence of a positive correlation between daily rainfall and maximum wind speed.

[4]

Markscheme

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

A Level
Maths
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.