This is what I got:

> sessionInfo()
R version 2.14.1 (2011-12-22)
Platform: x86_64-pc-mingw32/x64 (64-bit)

locale:
[1] LC_COLLATE=English_United States.1252
[2] LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C
[5] LC_TIME=English_United States.1252

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base
> ls()
[1] "a"      "sample"

On Sun, Feb 12, 2012 at 12:52 PM, SUPAKORN LAOHAPITAKVORN <
klangklang2002@gmail.com> wrote:

> Hi,
> Can anyone help me with the sample () in R?
>
> If I sample from x, I should get one integer.  Can anyone tell me what's
> wrong here?
> > x =1:12
> > sample(x)
> [1] 6.5
>
> And, I cannot get the sample with size = 2
> > sample(x, size = 2)
> Error in sample(x, size = 2) : unused argument(s) (size = 2)
> > sample(x, 2)
> [1] 54.16667
>
> Thank you in advance
>

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