手法を比較

	ケンドールの順位相関係数 (Kendall's Tau Rank Correlation)	ROC分析（受信者操作特性曲線）
分野	統計学	統計学
系統	Hypothesis test	Hypothesis test
提唱年	1938	1954 (signal detection); 1982 (AUC formalization)
提唱者	Maurice G. Kendall	Peterson, Birdsall & Fox (signal detection theory); Hanley & McNeil (medical statistics)
種類	Nonparametric rank correlation	Diagnostic accuracy evaluation
原典	Kendall, M. G. (1938). A new measure of rank correlation. Biometrika, 30(1/2), 81–93.	Hanley, J. A., & McNeil, B. J. (1982). The meaning and use of the area under a receiver operating characteristic (ROC) curve. Radiology, 143(1), 29–36.
別名	Kendall tau, Kendall rank correlation, tau-b, tau-c	ROC curve analysis, AUC analysis, sensitivity-specificity analysis, diagnostic accuracy analysis
関連	4	4
概要	Kendall's tau is a nonparametric measure of the ordinal association between two variables. It quantifies how consistently the relative ordering of one variable matches the ordering of another across all observation pairs, making it robust to outliers and suitable for ordinal or non-normally distributed data.	ROC analysis evaluates how well a continuous or ordinal test variable discriminates between two binary outcome classes. By plotting the true positive rate (sensitivity) against the false positive rate (1 − specificity) across all decision thresholds, it produces a curve whose area under the curve (AUC) quantifies overall discriminative power, ranging from 0.5 (chance) to 1.0 (perfect discrimination).