This article describes data from a drug interaction study of a new drug and a standard oral contraceptive therapy. Both normal theory and distribution-free statistical analyses are provided along...

AniWiki is a gallery for statistical animations in several subjects such as probability, linear models, multivariate statistics, and nonparametric statistics. Most of the animations are created in...

A cartoon to teach about comparing parametric versus non-parametric inference. Cartoon by John Landers (www.landers.co.uk) based on an idea from Lower Bounds on Statistical Humor by Alan H. Feiveson,...

This calculator computes Kendall's coefficient of concordance (W), Q (approximated by chi-square), degrees of freedom (DoF), and p-value for the Friedman Test. The user inputs a table of values with...

This tutorial explains the theory and use of the Friedman Two Way ANOVA
and demonstrates it with an example on exam scores, homework scores, and project scores. Data is given as well as SPSS and...

This tutorial on Friedman's Test includes its definition, assumptions, characteristics, and hypotheses. An example using output from the WINKS software is given, but those without the software can...

A movie frame given the statistical caption "Kolmogorov-Smirnov test: many think its still the best, especially for a non-parametric mood."
This is part of a collection of statistical captions to...

A sketch by Anastasia Mandel reinterpreting Blacksmiths Taking a Drink by Jean Francois Raffaelli (1884) with the statistical caption "Looks like Kolmogorov-Smirnoff testing." This is part of a...

This collection of tutorials covers many statistical applications such as Pearson's Correlation Coefficient, Simple Linear Regression, One and Two Sample t-tests, Paired t-test, One-way Analysis of...

This article introduces Radial Basis Function (RBF) networks. These networks rely heavily on regression analysis techniques. Topics include Nonparametric Regression, Classification and Time Series...