Relationships · Correlation
Pearson and Spearman Correlation
Are we measuring a linear relationship or a monotonic ordering?
Page 1 of 7 · Big Picture
The big picture: Pearson and Spearman Correlation
Are we measuring a linear relationship or a monotonic ordering?
Why a policy analyst should care
Pearson and Spearman answer different relationship questions and react differently to curvature and influential values, so they are not interchangeable robustness checks.
Follow the idea from the opening question to a practical decision. These are the conceptual moves this module will develop:
1 Question Linear values or monotonic ranks?
2 Explore Move an influential point
3 Formalize Two correlation targets
4 Transfer Choose and justify
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