On Mon, Oct 19, 2009 at 12:53 PM, Kingsford Jones <kingsfordjo...@gmail.com> wrote: >> sum((x-mean(x))^2)/(n) > [1] 0.4894708 >> ((n-1)/n) * var(x) > [1] 0.4894708
But this is not a built-in function in R to do so, right? > hth, > Kingsford > > On Mon, Oct 19, 2009 at 9:30 AM, Peng Yu <pengyu...@gmail.com> wrote: >> It seems that var() computes sample variance. It is straight forward >> to compute population variance from sample variance. However, I feel >> that it is still convenient to have a function that can compute >> population variance. Is there a population variance function available >> in R? >> >> $ Rscript var.R >>> set.seed(0) >>> n = 4 >>> x = rnorm(n) >>> var(x) >> [1] 0.6526278 >>> sum((x-mean(x))^2)/(n-1) >> [1] 0.6526278 >>> >> >> ______________________________________________ >> 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.
