手法を比較

	ロバストケンドールタウ順位相関係数	ロバストピアソン相関
分野	統計学	統計学
系統	Hypothesis test	Hypothesis test
提唱年	1990s–2000s	1970s–1990s
提唱者	Rand Wilcox; Croux & Dehon (robust extensions)	Rand R. Wilcox and predecessors in robust statistics
種類	Robust rank correlation	Robust bivariate association measure
原典	Wilcox, R. R. (2012). Introduction to Robust Estimation and Hypothesis Testing (3rd ed.). Academic Press. ISBN: 978-0123869838	Wilcox, R. R. (2012). Introduction to Robust Estimation and Hypothesis Testing (3rd ed.). Academic Press. ISBN: 978-0123869838
別名	robust tau, skipped Kendall's tau, Winsorized Kendall's tau, outlier-resistant rank correlation	winsorized correlation, percentage bend correlation, robust r, outlier-resistant correlation
関連	5	3
概要	Robust Kendall's tau estimates the monotone association between two variables using rank-based concordance counts, but augments the standard procedure with outlier detection or Winsorization so that a small number of extreme observations cannot distort the result. It is appropriate when data are ordinal or continuous and bivariate outliers are plausible.	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.