), group - c(5,5,5,5,9,9,9))
tapply(my.df$a,my.df$group,median)
5 9
8 5
See ?tapply and/or ?aggregate for more information.
HTH,
Jorge
On Fri, Aug 1, 2008 at 1:30 PM, Lotta R [EMAIL PROTECTED] wrote:
Hi all,
I have data that looks like
number|grouping
I would like to preform
Hi all,
I have data that looks like
number|grouping
I would like to preform stats for each grouping
so
1|5
6|5
10|5
11|5
3|9
5|9
10|9
Say I would like to take the median for above, I should be returned 2 lines,
one for group #5 and one for group #9
Does this make sense?
I am sorry for the
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