Clik here to view.
Post hoc analysis for Friedman’s Test (R code)
My goal in this post is to give an overview of Friedman’s Test and then offer R code to perform post hoc analysis on Friedman’s Test results. (The R function can be downloaded from here) Preface: What...
View ArticleSiegel-Tukey: a Non-parametric test for equality in variability (R code)
Daniel Malter just shared on the R mailing list (link to the thread) his code for performing the Siegel-Tukey (Nonparametric) test for equality in variability. Excited about the find, I contacted...
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Correlation scatter-plot matrix for ordered-categorical data
When analyzing a questionnaire, one often wants to view the correlation between two or more Likert questionnaire item’s (for example: two ordered categorical vectors ranging from 1 to 5). When dealing...
View ArticleClik here to view.
Post hoc analysis for Friedman's Test (R code)
My goal in this post is to give an overview of Friedman’s Test and then offer R code to perform post hoc analysis on Friedman’s Test results. (The R function can be downloaded from here) Preface: What...
View ArticleSiegel-Tukey: a Non-parametric test for equality in variability (R code)
Daniel Malter just shared on the R mailing list (link to the thread) his code for performing the Siegel-Tukey (Nonparametric) test for equality in variability. Excited about the find, I contacted...
View ArticleClik here to view.
Correlation scatter-plot matrix for ordered-categorical data
When analyzing a questionnaire, one often wants to view the correlation between two or more Likert questionnaire item’s (for example: two ordered categorical vectors ranging from 1 to 5). When dealing...
View Article
