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Data recording, analysis and presentation

Data recording, analysis and presentation

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Question 149

What does d d\,d represent in the formula for Spearman's rank correlation coefficient (rsr_srs​) below?

rs=1−6∑d2N(N2−1) r_s = 1 - \frac{6 \sum d^2}{N(N^2 - 1)} rs​=1−N(N2−1)6∑d2​
A

The total number of pairs of scores.

B

The difference between the ranks of each pair of scores.

C

The sum of the squared differences between the ranks.

D

The standard deviation of the differences between the scores.

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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