[R] Sphericity test in R for repeated measures ANOVA

Simon Blomberg 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:
> Hi,
> 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.
> Thanks
> Orou
> 	[[alternative HTML version deleted]]
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> 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 
email: S.Blomberg1_at_uq.edu.au

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.

More information about the R-help mailing list