Supplementary Materials for Visualizing Tests for Equality of Covariance Matrices

This page is intended to serve as an accompaniment to a paper prepared by Dr. Michael Friendly (@friendly) and Matthew Sigal (@mattsigal). The article pertains to the testing for equality of and visualization of covariance matrices in multivariate designs.
R code is provided throughout the article with commentary, and is provided here in fully reproducible form. The code is divided into 4 files: one for each primary example, and one for the work with betadisper().
| Dataset/Topic | R Script | Rendered HTML |
|---|---|---|
| Iris | iris-ex.R | iris-ex.html |
| Wine | wine-ex.R | wine-ex.html |
| Skulls | skulls-ex.R | skulls-ex.html |
| betadisper | betadisp-ex.R | betadisp-ex.html |

Questions and commentary can be directed to either @friendly or @mattsigal.