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Data recording, analysis and presentation

Data recording, analysis and presentation

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Question 48

A psychologist is conducting a study to investigate if there is a significant relationship between the number of hours of sleep per night and the score on a memory test (measured on an interval scale). The data is normally distributed.

When using the appropriate statistical table to find the critical value, which method should the psychologist use?

A

Locate the critical value using the number of participant pairs (NNN) directly.

B

Calculate the degrees of freedom using df=N−1df = N - 1df=N−1.

C

Calculate the degrees of freedom using df=N−2df = N - 2df=N−2.

D

Calculate the degrees of freedom using df=N1+N2−2df = N_1 + N_2 - 2df=N1​+N2​−2.

Markscheme

Data recording, analysis and presentation Questions

  1. A Level
  2. /Psychology
  3. /Data recording, analysis and presentation

513 exam-style questions on OCR A Level Psychology Data recording, analysis and presentation. Each one has a worked solution and a mark scheme showing where the marks go.

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