Re: ordianal data - normal distribution

Richard Ulrich wrote:
On Tue, 27 Feb 2007 12:27:02 +0100, Carmen Meier <carmei3@xxxxxx>
wrote:

Hi to all
Is ist possible to calculate a normal distribution for ordinal data?
f.e -10;-20;-40;-70;75;55;22;8

And if yes, what`s the best test for it?

The two parameters for a normal distribution are the mean
and variance.

The best general test for normality these days seems to be
the Shapiro-Wilks W. It can be used for small samples, though there will not be much power with small N.
Is "normality" what you wanted to test?


Q-Q plots would be another option. Here are some notes:

www.maths.murdoch.edu.au/units/statsnotes/samplestats/qqplot.html

--
Bruce Weaver
bweaver@xxxxxxxxxxxx
www.angelfire.com/wv/bwhomedir
.

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