I am working with a few advanced undergraduate students and using JMP more frequently (now that we have a university wide license). Is anyone able to tell me if JMP allows me to run a Zero Inflated Poisson model in the 'Fit Model' window (Personality = Generalized Linear Model; Distribution = Poisson; Link Function = Log) or if this can only be done in the script window? The data is suitable for this distribution but having a problem in JMP 9.0.2
(Dept. of Sociology
University of Texas at San Antonio)
using the Fit Model with the specifications you mentioned is what i did in the past to run the model and it did run with my data using JMP 9 at the time. another thing i use is the overdispersion tests and intervals and the Firth bias-adjusted estimates. i actually run the models twice with and without them to inspect robustness.
From my experience, if something in the Fit Model platform is not working properly, i try fitting each X separately to the Y to determine which of the variables is the source of the problem.