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相关系数: Pearson vs Spearman - 知乎 Wikipedia Definition: In statistics, Spearman’s rank correlation coefficient or Spearman’s ρ, named after Charles Spearman is a nonparametric measure of rank correlation (statistical dependence between the rankings of two variables)
Spearmans rank correlation coefficient - Wikipedia The Spearman correlation between two variables is equal to the Pearson correlation between the rank values of those two variables; while Pearson's correlation assesses linear relationships, Spearman's correlation assesses monotonic relationships (whether linear or not)