What is the Friedman test? The Friedman test, also sometimes referred to as Friedman’s two-way analysis of variance by ranks, is a non-parametric statistical test used to investigate whether groups of ...

The Institute of Statistical Science conducts fundamental and applied research related to statistics and probability. The Institute respects independent research of individual principal investigators, ...

The ANOVA analysis of variance test is a fantastic tool when your data follows the normal distribution. Should your data fall outside of this category, you have the Kruskal-Wallis test. Overview ...

In this article, we review the function of post-hoc tests in statistical analysis, how to interpret them and when to use them (and not use them).

The Bonferroni test is a multiple-comparison correction used when several dependent or independent statistical tests are being performed simultaneously.

A new method, R-scape, tests whether observed sequence covariation supports a conserved secondary structure in RNA. The program finds no evidence for previously proposed conserved secondary ...