R help - Apr 2007 - help comparing two median with R

Dear R users,
I am new to R and  I would like to ask your help with the following  
topic. I have three sets of numeral data, 2 sets are paired and a  
third is independent of the other two. For each of these sets I have  
obtained their basic statistics (mean, median, stdv, range ...).    
Now I want to compare if these sets differ. I could compare the mean  
doing a basic T test . However, I was looking for a test to compare  
the medians using R.   If that is possible I would love to hear the  
specifics.
Thanks in advance for any help,
Regards,


pedro reche

hi

+++++++
Now I want to compare if these sets differ. I could compare the mean 
doing a basic T test . However, I was looking for a test to compare 
the medians using R. 
+++++++
@@@i hope but i am not sure that wilcoxon signed rank test may help :-) 
cheers





Pedro A Reche <reche@research.dfci.harvard.edu> 
Sent by: r-help-bounces@stat.math.ethz.ch
17-04-07 02:22 PM

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[R] help comparing two median with R






Dear R users,
I am new to R and  I would like to ask your help with the following 
topic. I have three sets of numeral data, 2 sets are paired and a 
third is independent of the other two. For each of these sets I have 
obtained their basic statistics (mean, median, stdv, range ...). 
Now I want to compare if these sets differ. I could compare the mean 
doing a basic T test . However, I was looking for a test to compare 
the medians using R.   If that is possible I would love to hear the 
specifics.
Thanks in advance for any help,
Regards,


pedro reche

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Pedro A Reche wrote:
> Dear R users,
> I am new to R and  I would like to ask your help with the following  
> topic. I have three sets of numeral data, 2 sets are paired and a  
> third is independent of the other two. For each of these sets I have  
> obtained their basic statistics (mean, median, stdv, range ...).    
> Now I want to compare if these sets differ. I could compare the mean  
> doing a basic T test . However, I was looking for a test to compare  
> the medians using R.   If that is possible I would love to hear the  
> specifics.
Hi Pedro,
You can use the Mann-Whitney test ("wilcox" with two samples), but you
would have to check that the second and third moments of the variable 
distributions were the same, I think.

Jim