Correlation matrix question

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Hercules1
Posts: 6
Joined: Thu Jul 21, 2016 4:44 am

Correlation matrix question

Postby Hercules1 » Thu Jul 28, 2016 8:44 am

Hello E-views forum and thanks a lot for the help you provide to starters like me.

I have a question regarding correlation matrix.
I have panel data ( 14 countries, 11 years) and I want to produce a correlation matrix for my thesis.

I open the variables as a group, and then I go view-Covariance analysis-Correlation.

Afterwards I estimate a fixed effects model (country) and the coefficient signs are different with those on the correlation matrix.
Is it ok? Or that indicates a problem?

Thank you very much in advance for any help provided.

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

Re: Correlation matrix question

Postby startz » Thu Jul 28, 2016 8:56 am

Perfectly okay. The correlation simply looks at the pair-wise relations. The regression looks at relations controlling for other factors.

Hercules1
Posts: 6
Joined: Thu Jul 21, 2016 4:44 am

Re: Correlation matrix question

Postby Hercules1 » Thu Jul 28, 2016 9:08 am

Thank you very much for the reply.
If I get it right the correlation matrix does not take into account the fixed effects and that's why the negative correlation (on the matrix) turns to a positive one in the fixed effects model. Is this right?

Thank you

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

Re: Correlation matrix question

Postby startz » Thu Jul 28, 2016 9:13 am

Ya got it.

Hercules1
Posts: 6
Joined: Thu Jul 21, 2016 4:44 am

Re: Correlation matrix question

Postby Hercules1 » Thu Jul 28, 2016 9:34 am

Perfect! Thanks and keep up the good work!!


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