eviews7: Obtaining the Residual Variance covariance matrix

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DOC12
Posts: 8
Joined: Mon Jan 31, 2011 5:23 pm

eviews7: Obtaining the Residual Variance covariance matrix

Postby DOC12 » Fri Dec 28, 2012 1:49 am

Hi,
Please I need some guidance on how to obtain the residual variance covariance matrix for a simple equation estimated using TSLS. The covariance matrix option in the estimation output selections only shows the coeffcient covariance matrix.

Thanks

startz
Non-normality and collinearity are NOT problems!
Posts: 3796
Joined: Wed Sep 17, 2008 2:25 pm

Re: eviews7: Obtaining the Residual Variance covariance matr

Postby startz » Fri Dec 28, 2012 7:47 am

Hi,
Please I need some guidance on how to obtain the residual variance covariance matrix for a simple equation estimated using TSLS. The covariance matrix option in the estimation output selections only shows the coeffcient covariance matrix.

Thanks
The residuals themselves are in the series RESID. You can't estimate the residual variance covariance matrix without some further assumptions, as there are n^2/2 values and only n residuals.

DOC12
Posts: 8
Joined: Mon Jan 31, 2011 5:23 pm

Re: eviews7: Obtaining the Residual Variance covariance matr

Postby DOC12 » Fri Dec 28, 2012 12:00 pm

Thanks


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