Re: [R] Likelihood between observed and predicted response

2008-09-22 Thread Ben Bolker
Christophe LOOTS ifremer.fr> writes: > > Thank you so much for your help. > > The function "dbinom" seems to work very well. > > However, I'm a bit lost with the "dnorm" function. > > Apparently, I have to compute the mean "mu" and the standard deviation > "sd" but what does it mean exactly?

[R] Likelihood between observed and predicted response

2008-09-22 Thread Christophe LOOTS
Thank you so much for your help. The function "dbinom" seems to work very well. However, I'm a bit lost with the "dnorm" function. Apparently, I have to compute the mean "mu" and the standard deviation "sd" but what does it mean exactly? I only have a vector of predicted response and a vector

Re: [R] Likelihood between observed and predicted response

2008-05-14 Thread Ben Bolker
Christophe LOOTS ifremer.fr> writes: > > Hi, > > I've two fitted models, one binomial model with presence-absence data > that predicts probability of presence and one gaussian model (normal or > log-normal abundances). > > I would like to evaluate these models not on their capability of > a

[R] Likelihood between observed and predicted response

2008-05-13 Thread Christophe LOOTS
Hi, I've two fitted models, one binomial model with presence-absence data that predicts probability of presence and one gaussian model (normal or log-normal abundances). I would like to evaluate these models not on their capability of adjustment but on their capability of prediction by calcu