On Thu, 1 Apr 2004 17:19:55 -0500 Morris, Jeffrey [OCDUS] wrote: > What in the world am I missing??
The help page? As help(boot) tells you: statistic: <snip> In all other cases 'statistic' must take at least two arguments. The first argument passed will always be the original data. The second will be a vector of indices, <snip> So I would think you want to do: R> mymean <- function(x, index) mean(x[index]) R> boot(x, mymean, R = 20) ORDINARY NONPARAMETRIC BOOTSTRAP Call: boot(data = x, statistic = mymean, R = 20) Bootstrap Statistics : original bias std. error t1* 0.1775 0.03224225 0.1302358 hth, Z > > x<-rnorm(20) > > > mean(x) > [1] -0.2272851 > > > results<-boot(x,mean,R=5) > > > results[2] > $t > [,1] > [1,] -0.2294562 > [2,] -0.2294562 > [3,] -0.2294562 > [4,] -0.2294562 > [5,] -0.2294562 > > Jeff Morris > Ortho-Clinical Diagnostics > A Johnson & Johnson Co. > Rochester, NY > Tel: (585) 453-5794 > > > [[alternative HTML version deleted]] > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html