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st: About DID
From 
 
"Lynn Lee" <[email protected]> 
To 
 
<[email protected]> 
Subject 
 
st: About DID 
Date 
 
Mon, 17 Sep 2012 15:31:36 +0800 
Dear all,
I am sorry for duplicate emails. But I forgot to write another issue in DID
in my last email. 
I read the related article about basics of DID, and learned that serially
correlated outcomes can result in inconsistency in standard errors. I am
wondering how this inconsistency comes from? I appreciate for any help.
Best Regards,
Lynn Lee
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