R help - Sep 2005 - Help with a more flexible funtion for multiple comparisio n of means

Jose - 

Before implementing SNK and Duncan's, you may want to be aware of some
criticisms of these methods:
>From Hsu (1996), 
"Newman-Keuls multiple range test is not a confident inequalities method
and
cannot be recommended."

"Duncan's multiple range test is not a confident inequalities method
and
cannot be recommended either. In the words of Tukey (1991), Duncan's
multiple range test was a 'distraction' in the history of multiple
comparisons, amounting to 'talking 5% while using more than 5%
simultaneous'"

@Book{Hsu1996,
  author = 	 {Jason C. Hsu},
  title = 	 {Multiple Comparisons: Theory and Methods},
  publisher = 	 {Chapman & Hall},
  year = 	 {1996}
}


-- Jim 


LEGAL NOTICE\ Unless expressly stated otherwise, this messag...{{dropped}}

Rogers, James A [PGRD Groton] wrote:
> Jose - 
> 
> Before implementing SNK and Duncan's, you may want to be aware of some
> criticisms of these methods:
> 
>>From Hsu (1996), 
> 
> "Newman-Keuls multiple range test is not a confident inequalities
method and
> cannot be recommended."
> 
> "Duncan's multiple range test is not a confident inequalities
method and
> cannot be recommended either. In the words of Tukey (1991), Duncan's
> multiple range test was a 'distraction' in the history of multiple
> comparisons, amounting to 'talking 5% while using more than 5%
> simultaneous'"
> 
> @Book{Hsu1996,
>   author = 	 {Jason C. Hsu},
>   title = 	 {Multiple Comparisons: Theory and Methods},
>   publisher = 	 {Chapman & Hall},
>   year = 	 {1996}
> }
> 
> 
> -- Jim 
Ok Jim, I know these limitations, but these tests exists.
BTW, I am making this function for academic reasons and to learning how to make 
more advanced R functions.

Thanks for all.

Best,
-- 
Jose Claudio Faria
Brasil/Bahia/UESC/DCET
Estatistica Experimental/Prof. Adjunto
mails:
  joseclaudio.faria at terra.com.br
  jc_faria at uesc.br
  jc_faria at uol.com.br
tel: 73-3634.2779