Model of Zero-Inflated Poisson

[bines]

Is it possible to get a numerical example of the model Zero-Inflated Poisson Thanks

[JohnPR]

Re: Model of Zero-Inflated Poisson http://www.ats.ucla.edu/stat/stata/dae/zip.htm

[bines]

Re: Model of Zero-Inflated Poisson There is no example of a football, and formulas for the model ?

[JohnPR]

Re: Model of Zero-Inflated Poisson ZIP regression is a two part analysis consisting of Poisson Regression and Logistic Regression. If you are looking for the formulas it would indicate that you are going to attempt this manually using Excel before doing this I would take a look at these pages first that give the formulas and an indication of the level of math need to do it manually. http://en.wikipedia.org/wiki/Poisson_regression http://en.wikipedia.org/wiki/Logistic_regression A math package such as R would be a better place to start. http://en.wikipedia.org/wiki/R_%28programming_language%29)

[bines]

Re: Model of Zero-Inflated Poisson I found a file about zip, how do I attach a file?

[Smoothplanet]

Re: Model of Zero-Inflated Poisson In R you can use: http://rss.acs.unt.edu/Rdoc/library/pscl/html/zeroinfl.html Formula could be: goals ~ home + attack as usual.

[paparainbow]

Re: Model of Zero-Inflated Poisson u can inflate 0-0 but you will have to do so in other low draws too (lets say 1-1, 2-2...) if you want to produce a high draw probability.