Suppose you wanted to identify the strength of a relationship between the FIFA world ranking of a country's football team and the subsequent performance in the World Cup. What type of correlation test might you run?
A) Pearson's coefficient
B) Spearman's rho
C) Kendall's tau
D) Kolmogorov-Smirnov

Question

Quizplus · Accepted Answer

Spearman's rho is a non-parametric correlation test that is appropriate for ordinal data, which is the case with FIFA world rankings. It measures the strength and direction of the relationship between two variables, without requiring any assumptions about the underlying distribution of data. Therefore, it is the best choice for this scenario.

Suppose You Wanted to Identify the Strength of a Relationship