Hello,
I read a book about statistics in psychology. The authors use SPSS. They
talk about post hoc tests after ANOVA finds significant effects:
- Gabriel's procedure (for equal or slightly different sample sizes)
- Hochberg's GT2 (for different sample sizes)
- Games-Howell procedure (for populations with unequal variances)
I could not find them in R. Do they not exist in R or are there any
equivalents?
I know that I can use Tukey HSD if the sample sizes are equal and the
variances are homogeneous.
Thanks!
Claus
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