[R] sd help

Joshua Wiley jwiley.psych at gmail.com
Sun Sep 4 02:54:07 CEST 2011


You are not getting an error.  You are getting the standard deviation
of the columns as clearly described in the documentation.



On Sat, Sep 3, 2011 at 5:00 PM, novis <kaushik.sinha.cs at 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.
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Joshua Wiley
Ph.D. Student, Health Psychology
Programmer Analyst II, ATS Statistical Consulting Group
University of California, Los Angeles

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