Spearman's Rank

Specification

• List B from Topic B (Cognitive), focusing on the Spearman rank test.

Used for

• Relationship

• At least ordinal data

Spearman's Rank Correlation Coefficient

Past Paper questions

• Give two reasons why Tau used a Spearman’s rank test on his data. (2) October 2018

• Tau used p≤0.01 as his level of significance for a one-tailed test. Tau had twenty participants. Identify the critical value for a Spearman’s rank test for Tau’s data. The critical values can be found in the formulae and statistical tables at the front of the paper. (1) October 2018

• Tau made a type II error when deciding whether his results were significant or not. Explain why Tau made a type II error. (2) October 2018

• Arrissa carried out a Spearman’s rank test for a one-tailed test and found a calculated value of –0.58. Explain whether Arissa’s results were significant at p≤0.05. (2) June 2017

• Complete Table 1 and calculate Spearman’s Rank test between the average number of hours sleep in a night and the number of aggressive acts in a week. The formula can be found in the formulae and statistical tables at the front of the paper. You must express your answer to two decimal places. (4) October 2017

• State two reasons why the researchers used a Spearman’s rank test. (2) January 2017

• Complete Table 1 and calculate Spearman's Rank correlation coefficient for Hassan's study. (4) June 2019

• Interpret you Spearman's Rank correlation coefficient from (a)(1) in terms of strength and direction. (2) June 2019