Compara mètodes

	Test dels signes	Test de rangs amb signe de Wilcoxon
Camp	Estadística	Estadística
Família	Hypothesis test	Hypothesis test
Any d'origen	1946	1945
Autor original	W. J. Dixon & A. M. Mood	Frank Wilcoxon
Tipus	Nonparametric median test	Nonparametric paired comparison
Font seminal	Dixon, W. J. & Mood, A. M. (1946). The statistical sign test. Journal of the American Statistical Association, 41(236), 557–566.	Wilcoxon, F. (1945). Individual comparisons by ranking methods. Biometrics Bulletin, 1(6), 80–83.
Àlies	İşaret Testi (Sign Test), one-sample sign test, paired sign test	Wilcoxon matched-pairs signed-rank test, signed-rank test, Wilcoxon İşaretli Sıra Testi
Relacionats	4	4
Resum	The sign test is the simplest nonparametric hypothesis test for deciding whether the median of paired differences — or of a single sample — differs significantly from a hypothesised value. Formalised by W. J. Dixon and A. M. Mood in 1946, it imposes virtually no distributional assumptions and can be applied to any data where individual differences can be classified as positive or negative.	The Wilcoxon signed-rank test is the nonparametric alternative to the paired t-test, comparing two related measurements on the same subjects to decide whether their typical difference is zero. It was introduced by Frank Wilcoxon in 1945 and works on continuous or ordinal data without assuming normality.