Hi, You are not getting an error. You are getting the standard deviation of the columns as clearly described in the documentation.
Cheers, Josh On Sat, Sep 3, 2011 at 5:00 PM, novis <kaushik.sinha...@gmail.com> wrote: > Hello, > I am getting a strange error while computing standard deviation. If > the do the following I get the answer NA NA. Any help??? Thank you so > much. > > a<- cbind() > a<- cbind(a, 5) > a<- cbind(a, 7) > print(sd(a)) > > If I compute the mean it works fine though i.e., print(mean(a)) works > just fine. > > ______________________________________________ > 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. > -- Joshua Wiley Ph.D. Student, Health Psychology Programmer Analyst II, ATS Statistical Consulting Group University of California, Los Angeles https://joshuawiley.com/ ______________________________________________ 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.
