Gabor Grothendieck [EMAIL PROTECTED] writes:
What would be nice would be an R routine that automatically
implements this flowchart.
I'd recommend learning about p.adjust and the multcomp package
*instead* of following the flowchart.
Another approach to correcting for multiple testing is
On Tue, 29 Nov 2005, Claus Atzenbeck wrote:
How do you calculate post hoc multiple comparisons tests with R for
normal distributed samples with different variances?
In order to make it more visible, I have created an overview that shows
my decision about what test I use. It is available at
What would be nice would be an R routine that automatically
implements this flowchart.
On 11/30/05, Claus Atzenbeck [EMAIL PROTECTED] wrote:
On Tue, 29 Nov 2005, Claus Atzenbeck wrote:
How do you calculate post hoc multiple comparisons tests with R for
normal distributed samples with
On Wed, 30 Nov 2005, Gabor Grothendieck wrote:
What would be nice would be an R routine that automatically
implements this flowchart.
This overview is just for my personal usage. I am not a statistician,
but some others told me that there is a lot of experience behind
choosing the right test.
One could have a method= argument with
the default chosen by using the flowchart and the output including
information on which method was used. A good help page
and/or vignette (that included the flowchart) could help ameliorate
difficulties. That would still allow the user to specify a
Gabor Grothendieck [EMAIL PROTECTED] writes:
What would be nice would be an R routine that automatically
implements this flowchart.
I'd recommend learning about p.adjust and the multcomp package
*instead* of following the flowchart. (Ignoring heteroscedasticity
seems a bit silly too, given
Another possibility might be to have a CRAN Task View devoted
to tests. The whole area is quite confusing and it would be nice
to have a central point for guidance.
On 30 Nov 2005 16:55:13 +0100, Peter Dalgaard [EMAIL PROTECTED] wrote:
Gabor Grothendieck [EMAIL PROTECTED] writes:
What would
On Mon, 28 Nov 2005, Claus Atzenbeck wrote:
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
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
