[R] sample() from (un-)sorted vectors

Jeff Newmiller
2012-08-15T16:24:00Z

This seems more theoretical than specific to R, so you should discuss this
question in a more theoretical forum such as http://stats.stackexchange.com/.

FWIW I believe the results will be equally random either way. That doesn't
say either way will be "absolutely" random, since I don't think
such a thing is possible.
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Sent from my phone. Please excuse my brevity.

saschaview at gmail.com wrote:

>Hello,
>
>Vector y is an alphabetically sorted version of vector x. Will both
>samples, X and Y, be "absolutely" random or will they have
systematic
>differences? And: Should I sort or shuffle a vector before sampling?
>
>Thank you, *S*
>
>x <- as.factor(LETTERS[sequence(10:1)])
>y <- sort(x)
>X <- sample(x, 5)
>Y <- sample(y, 5)
>
>
>--
>Sascha Vieweg, saschaview at gmail.com
>
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