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Re: st: How to Do Significance Test for Each Group of Lags in Each VAR


From   Robert A Yaffee <bob.yaffee@nyu.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: How to Do Significance Test for Each Group of Lags in Each VAR
Date   Mon, 17 May 2010 13:28:38 -0400

James,
   You can do a step down test with the BIC for the VAR.   Whichever lag length yields the lowest BIC is probably the one to use.
   - Cheers,
           Bob

Robert A. Yaffee, Ph.D.
Research Professor
Silver School of Social Work
New York University

Biosketch: http://homepages.nyu.edu/~ray1/Biosketch2009.pdf

CV:  http://homepages.nyu.edu/~ray1/vita.pdf

----- Original Message -----
From: James Zhang <latent_hydralisk@hotmail.com>
Date: Sunday, May 16, 2010 7:53 am
Subject: st: How to Do Significance Test for Each Group of Lags in Each VAR
To: statalist@hsphsun2.harvard.edu


> Hi,
>  
> My name is James and I am working as a Research Assistant for my 
> professor in a college in California. My professor asked me to do a 
> VAR test on different stock markets using STATA. And after I got the 
> results (a big table of them since we are choosing for 4 lags based on 
> AIC), professor asked for individual significance indicators for each 
> group of lags in each VAR.
>  
> Here is part of his request and I quote:
>  
> "The only thing I'd like you to add is a significance test for each 
> group of lags in each VAR (for cases where the lag order is greater 
> than 1).  The chi-squared statistics at the top of each VAR set test 
> the overall significance of all regressors.  I'd like additional 
> chi-squared statistics for, say, lags 1 through 4 of shanghai, then 
> lags 1 through 4 of hongkong, etc."
>  
> Would someone be so kind to teach me how to do this? I'd appreciate it 
> very much. Thanks!
>  
> Sincerely Yours,
>  
> James                                               
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