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453
2010 Jun 08
2
Please help me
Dear Mr. or Ms.,
I used the R-software to run the zero-inflatoin negative binomial model (zeroinfl()) .
Firstly, I introduced one dummy variable to the model as an independent variable, and I got the estimators of parameters. But the results are not satisfied to me. So I introduced three dummy variables to the model. but I could not get the results. And the error message is