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st: RE: RE: RE: More on F test and the translog

From   "Maarten Buis" <[email protected]>
To   <[email protected]>
Subject   st: RE: RE: RE: More on F test and the translog
Date   Thu, 13 Apr 2006 16:10:34 +0200

Doesn't that equality hold by definition? In that case there is no need to test it.

Maarten L. Buis
Department of Social Research Methodology 
Vrije Universiteit Amsterdam 
Boelelaan 1081 
1081 HV Amsterdam 
The Netherlands

visiting adress:
Buitenveldertselaan 3 (Metropolitan), room Z214 

+31 20 5986715

-----Original Message-----
From: [email protected] [mailto:[email protected]]On Behalf Of Gauri Khanna
Sent: donderdag 13 april 2006 16:05
To: [email protected]
Subject: st: RE: RE: More on F test and the translog

The translog described in my email does not estimate Beta21, Beta31 and
Beta32. The reason is because when one estimates the translog,, LnX1.LnX2 is
the same as Ln.X2.LnX1, similarly for LnX2.LnX3=LnX3.LnX2 etc.. These cross
products are not viewed as different from each other and hence only one of
the pair is estimated.

But the homogeneity test requires equality between Beta(12)=Beta(21) etc in
addition to the others..


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