Well, but the original poster also refers to 0.2 and 0.8 as "expected min and max", in which case we are back to a joke...
Giovanni On Thu, 2011-04-28 at 13:06 -0400, David Winsemius wrote: > On Apr 28, 2011, at 12:09 PM, Ravi Varadhan wrote: > > > Surely you must be joking, Mr. Jianfeng. > > > > Perhaps not joking and perhaps not with correct statistical > specification. > > A truncated Normal could be simulated with: > > set.seed(567) > x <- rnorm(n=50000, m=1, sd=1) > xtrunc <- x[x>=0.2 & x <=0.8] > require(logspline) > plot(logspline(xtrunc, lbound=0.2, ubound=0.8, nknots=7)) > > -- > David. > > > ------------------------------------------------------- > > Ravi Varadhan, Ph.D. > > Assistant Professor, > > Division of Geriatric Medicine and Gerontology School of Medicine > > Johns Hopkins University > > > > Ph. (410) 502-2619 > > email: rvarad...@jhmi.edu > > > > > > -----Original Message----- > > From: > r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org > > ] On Behalf Of Mao Jianfeng > > Sent: Thursday, April 28, 2011 12:02 PM > > To: r-help@r-project.org > > Subject: [R] how to generate a normal distribution with mean=1, > > min=0.2, max=0.8 > > > > Dear all, > > > > This is a simple probability problem. I want to know, How to > > generate a > > normal distribution with mean=1, min=0.2 and max=0.8? > > > > I know how the generate a normal distribution of mean = 1 and sd = > 1 > > and > > with 500 data point. > > > > rnorm(n=500, m=1, sd=1) > > > > But, I am confusing with how to generate a normal distribution > with > > expected > > min and max. I expect to hear your directions. > > > > Thanks in advance. > > > > Best, > > Jian-Feng, > > > > [[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. > > David Winsemius, MD > West Hartford, CT > > ______________________________________________ > 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. > > -- Giovanni Petris <gpet...@uark.edu> Associate Professor Department of Mathematical Sciences University of Arkansas - Fayetteville, AR 72701 Ph: (479) 575-6324, 575-8630 (fax) http://definetti.uark.edu/~gpetris/ ______________________________________________ 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.
