At 03:54 PM 3/8/2008, David Winsemius wrote:
>"Robert A. LaBudde" <[EMAIL PROTECTED]> wrote in
>news:[EMAIL PROTECTED]:
>
> > Given a set of data with a number of variables plus a response, I'd
> > like to obtain a randomized subset of the rows such that the
> > marginal proportions of each variabl
"Robert A. LaBudde" <[EMAIL PROTECTED]> wrote in
news:[EMAIL PROTECTED]:
> Given a set of data with a number of variables plus a response, I'd
> like to obtain a randomized subset of the rows such that the
> marginal proportions of each variable are maintained closely in the
> subset to that of
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