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4.3.1 Statistical hypothesis testing (A-level only)

Question 4

An oceanographer, Dr. Aris, is investigating the linear relationship between seawater salinity levels $S$ and dissolved oxygen concentration $D$ across 18 hydrothermal vent samples. After performing her calculations, she determines the product moment correlation coefficient (PMCC) for the dataset.

Which of the following statements best describes her calculated result of $- 1.42$ ?

Definitely incorrect
Probably incorrect
Probably correct
Definitely correct

[2]

Markscheme

4.3.1 Statistical hypothesis testing (A-level only) Questions

A Level
Maths
4.3.1 Statistical hypothesis testing (A-level only)

178 exam-style questions on WJEC A Level Maths 4.3.1 Statistical hypothesis testing (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

4.3.1 Statistical hypothesis testing (A-level only)

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4.3.1 Statistical hypothesis testing (A-level only)

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Question 4

Which of the following statements best describes her calculated result of $- 1.42$ ?

Definitely incorrect
Probably incorrect
Probably correct
Definitely correct

[2]

Markscheme

4.3.1 Statistical hypothesis testing (A-level only) Questions

A Level
Maths
4.3.1 Statistical hypothesis testing (A-level only)

178 exam-style questions on WJEC A Level Maths 4.3.1 Statistical hypothesis testing (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.