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st: RE: Cointegration analysis including exogenous variables
From 
 
Nick Cox <[email protected]> 
To 
 
"'[email protected]'" <[email protected]> 
Subject 
 
st: RE: Cointegration analysis including exogenous variables 
Date 
 
Tue, 8 Mar 2011 15:35:08 +0000 
Treating the weather as "truly exogenous" is not the best current science, although I imagine you don't want to build climate change into your model. 
Nick 
[email protected] 
Beat Hintermann
I would like to estimate the cointegrating relationship between 3 I(1) 
variables, but in the presence of exogenous I(0) variables. 
Specifically, I want to estimate the long-term relationship between 
electricity, gas and coal prices, but taking into account exogenous 
weather shocks (like heating degree days or precipitation, stuff that is 
truly exogenous).
 From what I gathered in the Statalist archive, it is not advisable (and 
perhaps even impossible) to include exogenous and/or I(0) variables into 
the vec model framework. But since the weather definitely influences 
electricity and fuel prices, I don't see how ignoring this information 
will give me the best result.
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