On May 8, 2013, at 12:55 PM, peter dalgaard wrote: > > On May 8, 2013, at 20:38 , Robert Baer wrote: > >> On 5/6/2013 7:02 AM, arun wrote: >> stErr<- sd(vec1)/sqrt(length(vec1)) >> >> Or possibly, >> >> stErr<- sd(vec1)/sqrt(!is.na(vec1)) >> > > You probably intended sqrt(sum(!is.na(...))).
And if 'vec1' has NA's in it, he would also need: sd(vec1, na.rm=TRUE) -- David Winsemius Alameda, CA, USA ______________________________________________ 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.
