Pearson correlation is an appropriate statistic for a nonlinear relationship.

Question

Quizplus · Accepted Answer

Pearson correlation measures the linear relationship between two variables. If the relationship is nonlinear, Pearson correlation may not be an appropriate statistic as it does not capture the strength and direction of a curved relationship. Other correlation measures, such as Spearman's rank correlation or Kendall's tau, may be more appropriate for nonlinear relationships.

Pearson Correlation Is an Appropriate Statistic for a Nonlinear Relationship