See FAQ 7.31: http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-doesn_0027t-R-think-these-numbers-are-equal_003f
And try this: 25000*(1-.55) - 11250 25000*.45 - 11250 Notice a difference? Best, -- Wolfgang Viechtbauer Department of Psychiatry and Neuropsychology School for Mental Health and Neuroscience Maastricht University, P.O. Box 616 6200 MD Maastricht, The Netherlands Tel: +31 (43) 368-5248 Fax: +31 (43) 368-8689 Web: http://www.wvbauer.com ----Original Message---- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of cory n Sent: Monday, December 20, 2010 20:04 To: r-help@r-project.org Subject: [R] sample() issue >> length(sample(25000, 25000*(1-.55))) > [1] 11249 > >> 25000*(1-.55) > [1] 11250 > >> length(sample(25000, 11250)) > [1] 11250 > >> length(sample(25000, 25000*.45)) > [1] 11250 > > So the question is, why do I get 11249 out of the first command and not > 11250? I can't figure this one out. > > Thanks > > Cory > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
