What is the purpose Sargan Test and how to run it in eviews?

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Srikanth Potharla

thank you Prof. Chaojie Jin for your valuable response.

i will try the process explained by you to calculate Sargan Test statistic.

can you explain me briefly what do you mean by overidentifying restrictions.

Dear Prof. Chaojie Jin

in step 2, the independent variable 'z' means z-score. am i right?

in step3, k means number of regressors in the model, am i right?

thanks in advance

Chuck A Arize

I do not believe he means a z-score.

Technically, you really need 2 regressions. One by IV and another by OLS.

Resid from IV is regressed on the instruments (Z) to get R^2