Rich Ulrich wrote:
>
> On Mon, 11 Feb 2002 13:56:46 +0100, "nikolov"
> <[EMAIL PROTECTED]> wrote:
>
> > hello,
> >
> > i want to test the difference between two proportions. The problem is that
> > some elements of these proportions are dependent (i can not isolate them).
> > That is, the t-statistics does not work. How could i do? Do other kind of
> > tests exist? Is there a book or a paper on the subject?
>
> Taking your questions in reverse order --
>
> I don't know of a book or paper about general dependencies,
> but those concerns are implicit in "estimation theory".
>
> If dependency is what makes the t-test hard to use, you will
> have trouble with everything else that is common, too.
>
> What you could do is --
> (a) Use the t-test anyway, if the correlations are positive:
> because the bias would just reduce the power of the test.
and the level...
Glen
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