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	ロバストピアソン相関	スペルマン順位相関係数
分野	統計学	統計学
系統	Hypothesis test	Hypothesis test
提唱年	1970s–1990s	1904
提唱者	Rand R. Wilcox and predecessors in robust statistics	Charles Spearman
種類	Robust bivariate association measure	Nonparametric rank-based correlation
原典	Wilcox, R. R. (2012). Introduction to Robust Estimation and Hypothesis Testing (3rd ed.). Academic Press. ISBN: 978-0123869838	Spearman, C. (1904). The proof and measurement of association between two things. The American Journal of Psychology, 15, 72–101.
別名	winsorized correlation, percentage bend correlation, robust r, outlier-resistant correlation	Spearman's rho, Spearman rank-order correlation, Spearman Sıra Korelasyonu
関連	3	4
概要	The robust Pearson correlation is an outlier-resistant measure of linear association between two continuous variables. By applying Winsorizing, trimming, or percentage-bend transformations before computing the classic Pearson r, it retains the interpretability of a correlation coefficient while dramatically reducing the distortion caused by extreme values.	The Spearman rank correlation coefficient (ρ) is a nonparametric measure of the monotonic association between two variables. Introduced by Charles Spearman in 1904, it converts raw observations to ranks and measures how consistently one variable increases as the other increases, without assuming a normal distribution or a linear relationship.