At 6:44 PM +0100 2/12/10, Søren Højsgaard wrote:
You might find the summaryBy function in the doBy package useful.
Regards
Søren
see also the describe.by function in the psych package.
________________________________________
Fra: r-help-boun...@r-project.org
[r-help-boun...@r-project.org] På vegne af
jose romero [jlauren...@yahoo.com]
Sendt: 12. februar 2010 18:23
Til: r-help@r-project.org
Emne: [R] summary statistics for grouped data
Hello list:
Is there an easy way (preferably through one of
the standard R packages) of obtaining summary
statistics for grouped data? I could split the
data into classes by hist, and then
progressively calculate all the "columns" i need
to obtain the mean and standard deviation, but i
was looking for a single function that could do
that with a data vector.
Thanks in advance,
jose romero
[[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.
______________________________________________
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.
--
William Revelle http://revelle.net/revelle.html
2815 Lakeside Court http://revelle.net/lakeside
Evanston, Illinois
It is 6 minutes to midnight http://www.thebulletin.org
______________________________________________
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.
