Re: [R] Predicted values for zero-inflated Poisson

2012-07-10 Thread Laura Lee
5n4636025...@n4.nabble.com] Sent: Tuesday, July 10, 2012 1:52 PM To: Lee, Laura Subject: Re: Predicted values for zero-inflated Poisson *Laura Lee* laura.lee at ncdenr.gov <mailto:r-help%40r-project.org?Subject=Re%3A%20%5BR%5D%20Predicted%20values%20for%20zero-inflated%20Poisson&In-Reply-To=%3

Re: [R] Predicted values for zero-inflated Poisson

2012-07-10 Thread Laura Lee
I want to predict the number of turtles for different levels of effort and combinations of covariates. So, for my dataset from which I built the model, would I compare sum(predict(ZIP,type="response")) to the observed bycatch to compare numbers? In order to predict for the new data (called effort),

Re: [R] Predicted values for zero-inflated Poisson

2012-07-10 Thread Laura Lee
012 5:20 PM To: Lee, Laura Subject: Re: Predicted values for zero-inflated Poisson Laura Lee laura.lee at ncdenr.gov Mon Jul 9 22:51:40 CEST 2012 Previous message: [R] Predicted values for zero-inflated Poisson Next message: [R] Lavaan Package - How to Extract Residuals in Data V

Re: [R] Predicted values for zero-inflated Poisson

2012-07-09 Thread Laura Lee
Thanks for your reply. I do have a copy of "Zero Inflated Models and Generalized Linear Mixed Models with R" and have been using that as a guide. I applied the predict function (type="count") to the dataset for which I built the model to compare the predicted bycatch numbers to the observed to ensu