I am a novice in R but using R 2.13.1 in Windows I wish to be able to
calculate the percentage variation in a 

 zero-inflated negative binomial regression model  that is explained by the
two predictors in my model.  My response variable was no. of dung-piles per
km and the predictor of excess zeros was distance to major road (km) .

Thanks in advance.

Boafo

 


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