On Tue, 25 May 2004 12:27:40 +0200 Cristian Pattaro wrote: > Dear all, > > I have a surprising problem with the representation of frequencies in > a histogram. > > Consider, for example, the R code: > > b<-rnorm(2000,3.5,0.3) > hist(b,freq=F) > > When I plotted the histogram, I expected that values in the y-axis > (the probability) varied between 0 and 1. Instead, they varied within > the range 0-1.3.
The y-axis gives the density not the probability! And the density you are sampling from has R> dnorm(3.5, mean = 3.5, sd = 0.3) [1] 1.329808 so you shouldn't be surprised by this. Z > Have you got any suggestion for obtaining a correct graph with > probability within the range 0-1? > > Thank you very much! > > Bests > /Cristian/ > > ============================================= > Cristian Pattaro > ============================================= > Unit of Epidemiology & Medical Statistics > Department of Medicine and Public Health > University of Verona > > http://biometria.univr.it > [EMAIL PROTECTED] > ============================================= > > > [[alternative HTML version deleted]] > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html