Is this different from a regular old weighted mean?
Reference? How done in Stata?
Richard Herrell wrote:
>
> Perhaps simply a precision-weighted mean of the
within animal means.
>
> On Thu, 2 Jan 2003, Kate wrote:
>
> > Yes. Also no 'treatment' here. Just have a
collection
> > of measures made during 'routine physicals' on
these
> > animals, different numbers of measures per animal,
> > data set in the long form, and want to take a stab
at
> > stating what are 'normal' values--the mean, sd,
also
> > MEDIAN, etc--for this animal.
> >
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