If a researcher wanted to prove that there is a relationship between two variables and had collected
30 data points for each group, the Spearman rank correlation coefficient could be used, but Pearson's
correlation coefficient would be a better choice for a test method.

Question

Quizplus · Accepted Answer

Pearson's correlation coefficient is a parametric test that assumes the data is normally distributed. Spearman's rank correlation coefficient is a non-parametric test that does not make this assumption. Therefore, Pearson's correlation coefficient would be a better choice for a test method if the data is normally distributed.

If a Researcher Wanted to Prove That There Is a Relationship