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Re: st: Series - Variations between 2 dates


From   David Greenberg <dg4@nyu.edu>
To   statalist@hsphsun2.harvard.edu, luiginoianni@hotmail.it
Subject   Re: st: Series - Variations between 2 dates
Date   Tue, 11 Dec 2012 16:16:39 -0500

In general, you cannot partition the contribution of different
variables to the amount of variance explained in a regression
analysis. Only when the predictors are uncorrelated is this possible.
David Greenberg, Sociology Department, New York University

On Tue, Dec 11, 2012 at 2:11 PM, Luigino Ianni <luiginoianni@hotmail.it> wrote:
> Dear All,
>
> I’ m trying to solve the following problem:
>
> Date 1.    Y= (A+B+C)/(D+E+F)
> Date 2.    Y= (A+B+C)/(D+E+F)
>
> How can I perform an analysis to measure the contribution of each element
> (A, B, C, D, E, F) to the variations in Y between the dates one and two?
>
> Thanks in advance,
>
> Luigino
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