> > > Do you want to make any assumptions about the form of the conditional,
> > > or the joint, or any of the marginals?
> >
> > Well, the X & Y are dependent and hence there are being descibed by a joint
> > PDF.
>
> Can you at least indicate whether any of them are restricted to be positive?


Also, can you treat them as fixed (not random?) You indicated before that
you data was from experiments, so if X,Y were independent they could be
also non-random or controled by a researcher.



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