search for: simumlation

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2009 Dec 30
2
Negbin Error Warnings
Hi, I ran a negative binomial regression (NBR) using the Zelig-package and the negbin model. When I then try to use the simumlation approach using the setx () and sim() functions to calculate expected values and first difference for different levels of one of my independent variables, I get 50 errors warnings, telling me that the calculation rpois produced NAs. However, the data I use doesn't have any NAs. Does this mean t...
2009 Dec 30
1
Fwd: Negbin Error Warnings
...; > could you, please, share the summary() of your data. > > bests > > milton > > 2009/12/30 Clara Brück <clara_brueck@web.de> > Hi, > > I ran a negative binomial regression (NBR) using the Zelig-package > and the negbin model. > When I then try to use the simumlation approach using the setx () and > sim() functions to calculate expected values > and first difference for different levels of one of my independent > variables, I get 50 errors warnings, telling me that the calculation > rpois produced NAs. However, the data I use doesn't have any NA...