[R] Sphericity test in R for repeated measures ANOVA
s.blomberg1 at uq.edu.au
Tue Aug 21 07:41:31 CEST 2007
?mauchly.test also ?anova.mlm
Another approach would be to do a direct test of compound symmetry by
fitting models with and without that structure, and compare them via a
likelihood ratio test.
On Mon, 2007-08-20 at 19:08 -1000, Orou Gaoue wrote:
> Is there a way to do a sphericity test in R for repeated measures ANOVA
> (using aov or lme)? I can't find anything about it in the help.
> [[alternative HTML version deleted]]
> R-help at stat.math.ethz.ch mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
Simon Blomberg, BSc (Hons), PhD, MAppStat.
Lecturer and Consultant Statistician
Faculty of Biological and Chemical Sciences
The University of Queensland
St. Lucia Queensland 4072
Room 320 Goddard Building (8)
T: +61 7 3365 2506
1. I will NOT analyse your data for you.
2. Your deadline is your problem.
The combination of some data and an aching desire for
an answer does not ensure that a reasonable answer can
be extracted from a given body of data. - John Tukey.
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