Wald Coefficient Tests

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Steffen
Posts: 5
Joined: Sat Mar 06, 2010 3:30 am

Wald Coefficient Tests

Postby Steffen » Mon Apr 26, 2010 7:01 am

Hello,

I've got a question to the outcome of some Wald Coefficient Tests.

I estimated a regression and found coefficients of c(1) close to zero and c(2) close to unity. The standard errors are quite small, around 0.003.

When I apply Wald Coefficient Tests for the restrictions c(1)=0 and c(2)=1 the null is overwhelmingly rejected. That surprises me looking at the estimation output. Can anybody explain how estimates so close to the testable restrictions in connection with these small standard errors can lead to such strong rejections of the null?

Many thanks in advance.

startz
Non-normality and collinearity are NOT problems!
Posts: 3797
Joined: Wed Sep 17, 2008 2:25 pm

Re: Wald Coefficient Tests

Postby startz » Mon Apr 26, 2010 8:30 pm

Small standard errors make rejection more likely.

Steffen
Posts: 5
Joined: Sat Mar 06, 2010 3:30 am

Re: Wald Coefficient Tests

Postby Steffen » Mon Apr 26, 2010 10:55 pm

Thanks a lot. Obviously I made an error in my reasing.


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