R help - May 2005 - Nonparametric Tukey-type multiple comparisons "Nemenyi" test

I am trying to do a Nonparametric Tukey-type multiple comparison 
post-hoc test to determine which groups are significantly different.  I 
have read the dialogue on this topic from the R-help, and am still not 
clear why no statistical packages include this test as an option?  Is it 
not an appropriate test to conduct on non-normally distributed data?  Is 
the only option to calculate it by hand using the (Zar 1996) formula?

Thank you in advance for your help. 

-- 
Rikki Grober- Dunsmore
National Marine Fisheries Service
National Marine Protected Areas Center
110 Shaffer Rd.
Santa Cruz, CA 95060
831-420-3991 


Unless someone like you,
Cares a whole awful lot,
Nothing is going to get better,
It's not.
       - The Lorax, by Dr. Seuss, 1971

help.search("Tukey"). The fifth hit is TukeyHSD().  Also take a look
at
tmd(lattice)

Cheers

Francisco
>From: "Rikki Dunsmore" <Rikki.Dunsmore at noaa.gov>
>To: r-help at stat.math.ethz.ch
>Subject: [R] Nonparametric Tukey-type multiple comparisons
"Nemenyi" test
>Date: Mon, 02 May 2005 16:45:20 -0700
>
>I am trying to do a Nonparametric Tukey-type multiple comparison post-hoc 
>test to determine which groups are significantly different.  I have read 
>the dialogue on this topic from the R-help, and am still not clear why no 
>statistical packages include this test as an option?  Is it not an 
>appropriate test to conduct on non-normally distributed data?  Is the only 
>option to calculate it by hand using the (Zar 1996) formula?
>
>Thank you in advance for your help.
>
>--
>Rikki Grober- Dunsmore
>National Marine Fisheries Service
>National Marine Protected Areas Center
>110 Shaffer Rd.
>Santa Cruz, CA 95060
>831-420-3991
>
>
>Unless someone like you,
>Cares a whole awful lot,
>Nothing is going to get better,
>It's not.
>       - The Lorax, by Dr. Seuss, 1971
>
>______________________________________________
>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

> I am trying to do a Nonparametric Tukey-type multiple comparison
> post-hoc test to determine which groups are significantly different.
the manual page to `oneway_test' (in package `coin') has an example of
the Nemenyi-Damico-Wolfe-Dunn test taken from Hollander & Wolfe (1999).

Best,

Torsten

> I
> have read the dialogue on this topic from the R-help, and am still not
> clear why no statistical packages include this test as an option?  Is it
> not an appropriate test to conduct on non-normally distributed data?  Is
> the only option to calculate it by hand using the (Zar 1996) formula?
>
> Thank you in advance for your help.
>
> --
> Rikki Grober- Dunsmore
> National Marine Fisheries Service
> National Marine Protected Areas Center
> 110 Shaffer Rd.
> Santa Cruz, CA 95060
> 831-420-3991
>
>
> Unless someone like you,
> Cares a whole awful lot,
> Nothing is going to get better,
> It's not.
>        - The Lorax, by Dr. Seuss, 1971
>
> ______________________________________________
> 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
>
>