I'd hazard a guess that data.linear$Weight may have a "Not Available" data point (ie. missing data).
> f <- c(NA,rnorm(10)) > mode(f) [1] "numeric" > mean(f) [1] NA If you'd like to compute the mean anyway, you can use > mean(f,na.rm=TRUE) [1] 0.3433036 On 7/9/06, justin rapp <[EMAIL PROTECTED]> wrote: > I have a vector containing players' weights. When I enter > > > mode(data.linear$Weight) > "numeric" is returned. > > > When I type mean(data.linear$Weight) > > NA is returned. > > Any ideas as to why this may be the case? I am trying to calculate > this ultimately so I can superimpose a normal density line over a > histogram containing the weights? > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > -- Regards, Mike Nielsen ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html