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st: ? switching regression ?


From   "Hoffman, George" <[email protected]>
To   <[email protected]>
Subject   st: ? switching regression ?
Date   Sat, 28 Apr 2007 07:28:25 -0500

i am trying to do a regression of two indep vars on one dep var. the basic form will be:
Z = aX + bY + c
 
however, X and Y were measured with two different instruments, whose identity is not in the database. instrument 2 has a fixed ofset from instruemtn 2, such that
X2 = X1+10  and Y2 = Y1+10
 
i would like to fit the first general equation, and determine whether each individual observation best fits instrument 1 or 2.
i have read switchr but i don't think this fits.
 
any help is appreciated,
 
thank you
 
george hoffman
 

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