Re: [R] Help with a more flexible funtion for multiple comparisio n of means

2005-09-12 Thread Rogers, James A [PGRD Groton] 
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 


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Re: [R] Help with a more flexible funtion for multiple comparisio n of means

2005-09-12 Thread Jose Claudio Faria 
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:
  [EMAIL PROTECTED]
  [EMAIL PROTECTED]
  [EMAIL PROTECTED]
tel: 73-3634.2779

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