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Re: st: equating scores


From   TA Stat <tastat@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: equating scores
Date   Sun, 15 May 2011 23:04:21 +0700

I am not sure if your data will fit the nested data format as in a
longitudinal study or multilevel model.  If it fits, you should be
able to calculate the predicted score.

Peter

On Fri, May 13, 2011 at 10:59 AM, Hee Jin Bang <hbang@nwp.org> wrote:
> Hello,
>
> I have 3 sets of scores of student writing samples. These scores are of the SAME papers scored by different scorers in three consecutive years.
>
> The syntax I have been working with is--  linequate anchortest newtest oldtest , which calculates constants needed to equate the new test to an old test, using an anchor test. This assumes that there are different items in the two tests, and that there is an anchor test which was administered to both old test takers and new test takers.  This is not a correct assumption for the situation I have on hand, where the same test that was taken by the same group of students are scored by different raters in different time points.
>
> Does anyone know of the appropriate syntax I should use? I'd be very gratef=
> ul for your help.
>
> HJB
>
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