Wilcoxon - PowerPoint PPT Presentation

Statistics (AKA: Sadistics) Made Easy

Statistics (AKA: Sadistics) Made Easy. by Donna L. Agan, EdD. Show of Hands. Who is doing a study that involves statistical analysis of data? What type of (quantitative) data are you collecting?

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Non-parametric tests

Non-parametric tests. Note: When valid use parametric Commonly used Wilcoxon Chi square etc. Performance comparable to parametric Useful for non-normal data If normalization not possible Note: CI derivation-difficult/impossible. Wilcoxon signed rank test.

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Topic 15 Nonparametric/Distribution Free Methods

Topic 15 Nonparametric/Distribution Free Methods. Does not depend on distributional assumptions such as normality Distribution-free property achieved by using signs and/or ranks in place of the original measurements . Potencies (in mg) of 10 tablets.

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/*use the following to calculate the tied KW statistics*/

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