[R] R: pp plot

Clark Allan Allan at STATS.uct.ac.za
Tue Nov 22 13:56:41 CET 2005


the distribution is not a standard one

P Ehlers wrote:
> 
> Is qq.plot in package 'car' of use to you? I think that it
> requires your distribution to be one of those available in R.
> 
> Peter
> 
> Clark Allan wrote:
> > hi all
> >
> > i would like to know if anyone has a reference on how one would place
> > the "bands" on the pp plot.
> >
> > i want to test whether or not a certain data set comes from a particular
> > distribution (not normal).
> >
> > i've already plotted F(X(j)) vs j/(n+1)       where F(x) is the cum dist
> > function, X(j) is the j'th order statistic and n is the sample size.
> >
> > a goole search gave arb references and thought some one one the list
> > should definitely know how to solve this problem.
> >
> > thanking you in advance
> > allan
> >
> >
> > ------------------------------------------------------------------------
> >
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> 
> --
> Peter Ehlers
> University of Calgary
> 
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