Σύγκριση μεθόδων

	Δοκιμή Siegel-Tukey για Διαφορές Κλίμακας	Δοκιμή Fligner-Killeen για Ομοιογένεια Διασπορών
Πεδίο	Στατιστική	Στατιστική
Οικογένεια	Hypothesis test	Regression model
Έτος προέλευσης	1960	1976
Δημιουργός	Sidney Siegel & John W. Tukey	Michael A. Fligner & Timothy J. Killeen
Τύπος	Nonparametric scale comparison	Rank-based test for homogeneity of variances
Θεμελιώδης πηγή	Siegel, S. & Tukey, J. W. (1960). A Nonparametric Sum of Ranks Procedure for Relative Spread in Unpaired Samples. Journal of the American Statistical Association, 55(291), 429–444.	Fligner, M. A., & Killeen, T. J. (1976). Distribution-Free Two-Sample Tests for Scale. Journal of the American Statistical Association, 71(353), 210-213.
Εναλλακτικές ονομασίες	Siegel-Tukey rank test, nonparametric scale test, Siegel-Tukey Testi — Ölçek Farklılığı	Fligner-Killeen test of variance homogeneity, rank-based variance homogeneity test, Fligner-Killeen Varyans Homojenliği Testi
Συναφείς	2	5
Σύνοψη	The Siegel-Tukey test is a nonparametric hypothesis test that detects differences in variability (spread) between two independent groups whose central tendencies are equal or have been equalised. Introduced by Sidney Siegel and John W. Tukey in 1960, it is the nonparametric counterpart of Levene's test and requires no assumption of normality.	The Fligner-Killeen test is a rank-based test that checks whether several independent groups share the same variance (scale). Introduced by Fligner and Killeen in 1976, it does not require the data to be normally distributed, making it a robust nonparametric alternative to the Levene and Bartlett tests.