[R] Re : descriptive statistics

[Ivan Calandra]

I would suggest what we already suggested to you:
?aggregate
?by
?doBy::summaryBy

We could help you more precisely if you could provide a reproducible 
example, as explained in the posting guide (see link at the end of every 
email from this list)

Ivan

Le 12/13/2010 15:14, effeesse a écrit :
> I am sorry, but I cannot understand how to use the "summary" function. Maybe,
> if I describe my needs, you could sketch a line that could work.
> In the data set variable "V" can take values 1 to 14. For the subgroup of
> individuals where "V" takes value =1 I want the mean and variance of a
> certain set of other variables (V1, V2, V3, V4, V5). And this for all the
> other subgroups for values 2 to 14.
> What do you suggest?

-- 
Ivan CALANDRA
PhD Student
University of Hamburg
Biozentrum Grindel und Zoologisches Museum
Abt. Säugetiere
Martin-Luther-King-Platz 3
D-20146 Hamburg, GERMANY
+49(0)40 42838 6231
ivan.calandra at uni-hamburg.de