On Jan 30, 2011, at 10:01 PM, assaedi76 assaedi76 wrote:
R users:
Thanks in advance
How to generate missing at random (MAR)?
> missidx <- sample(1:nrow(dfrm), nrow(dfrm)*frac)
> is.na(dfrm$measure) <- 1:nrow(dfrm) %in% missidx
assaed...@yahoo.com
Thanks
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