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 In statistics, Spearman's rank correlation coefficient or Spearman's ρ is a number ranging from -1 to 1 that indicates how strongly two sets of ranks are correlated