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Non-parametric Methods
A statistical method is called non-parametric if it makes no assumption on the population distribution or sample size. This is in contrast with most parametric methods in elementary statistics that...
View ArticleWilcoxon Signed-Rank Test
A tutorial of performing statistical analysis with the Wilcoxon signed-rank test. read more
View ArticleMann-Whitney-Wilcoxon Test
A tutorial of performing statistical analysis with the Mann-Whitney-Wilcoxon test. read more
View ArticleKruskal-Wallis Test
A tutorial of performing statistical analysis with the Kruskal-Wallis test. read more
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Kendall Rank Coefficient
The correlation coefficient is a measurement of correlation between two random variables. While its computation is straightforward, it is not readily applicable to non-parametric statistics. read more
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Significance Test for Kendall's Tau-b
A variation of the standard definition of Kendall correlation coefficient is necessary in order to deal with data samples with tied ranks. It known as the Kendall’s tau-bcoefficient and is more...
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