Hi all!
I have built a model to predict interactions with turtles and the model
includes an offset for effort:
ZIP<-zeroinfl(Sturgeon~fMesh+fSeason+offset(LogEffort),dist="poisson",link="logit",data=data)
I wasn't clear about one aspect of the response to a similar question I
recently posted...I apply the predicted model to a new dataset of standard
conditions and take the sum to get the total predicted numbers of bycatch:
Prediction<-predict(ZIP,newdata=effort,type="response")
sum(Prediction)
Do I first need to exponentiate before taking the sum as in:
Prediction<-exp(predict(ZIP,newdata=effort,type="response"))
sum(Prediction)
Thanks again in advance!
Cheers,
Laura
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