I am interested in using "multcompLetters" after running "kruskalmc" but
I'm a newbie and I'm not having luck figuring it out. I can run "kruskalmc"
just fine,
but after studying the documentation for "multcompletters" for a long time,
I cannot figure out how to make it work. Any ideas? R input is below
>
>> #here is my data set
>> tst
> Month Food_kg
> 1 Feb 4.7
> 2 Feb 4.9
> 3 Feb 5.0
> 4 Feb 4.8
> 5 Feb 4.7
> 6 May 4.6
> 7 May 4.4
> 8 May 4.3
> 9 May 4.4
> 10 May 4.1
> 11 May 4.2
> 12 Aug 4.8
> 13 Aug 4.7
> 14 Aug 4.6
> 15 Aug 4.4
> 16 Aug 4.7
> 17 Aug 4.8
> 18 Nov 4.9
> 19 Nov 5.2
> 20 Nov 5.4
> 21 Nov 5.1
> 22 Nov 5.6
>> #run the KW test
>> k = kruskal.test(Food_kg, Month)
>> k
> Kruskal-Wallis rank sum test
>
> data: Food_kg and Month
> Kruskal-Wallis chi-squared = 17.2561, df = 3, p-value = 0.000626
>
>> #run the kruskalmc
>> kr = kruskalmc(Food_kg, Month)
>> kr
> Multiple comparison test after Kruskal-Wallis
> p.value: 0.05
> Comparisons
> obs.dif critical.dif difference
> Aug-Feb 3.650000 10.373791 FALSE
> Aug-May 6.333333 9.891022 FALSE
> Aug-Nov 9.450000 10.373791 FALSE
> Feb-May 9.983333 10.373791 FALSE
> Feb-Nov 5.800000 10.835071 FALSE
> May-Nov 15.783333 10.373791 TRUE
>> #now I want to run multcompLetters but I'm stuck
>
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
