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Wooldridge (Introductory Econometrics: A Modern Approach, 1st ed, p.551) suggests to estimate R-squared as the square of the correlation between the actual and predicted value, since it is definitely non-negative and always being between 0 and 1, even though the estimates are not chosen to maximize ...

Dear Gareth

Thanks for the clarification. I raised the original question after reading section 25.2.1 of Greene's "Econometric Analysis" 6th ed, which suggests a few different ways of computing R-squared for the Poisson model.

Thanks
KK

Dear moderator

Could you please tell me how R-squared and adjusted R-squared for the Poisson model are estimated in EViews? I notice that the Poisson model does not produced R-squared and adjusted R-squared statistics in the same way as in a linear regression model.

Thanks
KK