Hi Daniel, Judging by the numbers you mention, the distribution is either very skewed or not at all normal. If you look at this:
plot(c(0,0.012,0.015,0.057,0.07),c(0,0.05,0.4,0.05,0),type="b") you will see the general shape of whatever distribution produced these summary statistics. Did the paper give any hints as to what the model distribution might be? Jim On Tue, Jul 19, 2016 at 7:11 AM, gcchenleidenuniv <gcchenleidenu...@gmail.com> wrote: > Hi all, > > I need to draw density curves based on some published data. But in the > article only mean value (0.015 ) and quantiles (Q0.15=0.012 , Q0.85=0.057) > were given. So I was thinking if it is possible to plot density curves solely > based on the mean value and quantiles. The dnorm(x, mean, sd, log) function > needs the standard deviation which was not mentioned, so it can not be used > in this situation. > > Many thanks!! > Daniel > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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 -- To UNSUBSCRIBE and more, see 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.
