Re: [R-sig-eco] hurdle model for experiment anlysis

The habitats are replicated, sorry for the confusion! How can I decide if I really need a zero-inflated model or is it just expert judgment? I decided that I need it, because more than 50% of the data are true zeros (detectability=100%) and therfore e.g. Martin et al. (2005) or Zuur et al.,

Re: [R-sig-eco] hurdle model for experiment anlysis

Renke Lühken wrote: The habitats are replicated, sorry for the confusion! How can I decide if I really need a zero-inflated model or is it just expert judgment? I decided that I need it, because more than 50% of the data are true zeros (detectability=100%) and therfore e.g. Martin et al.