how to generate a normal distribution with mean=1, min=0.2, max=0.8
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: rvaradhan at jhmi.edu > > > -----Original Message----- > From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org > ] On Behalf Of Mao Jianfeng > Sent: Thursday, April 28, 2011 12:02 PM > To: r-help at 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 at 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 at 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