Displaying 2 results from an estimated 2 matches for "int_cesto".
2010 Feb 11
1
Zero-inflated Negat. Binom. model
...on between these two variables,
i.e. how well does chick size predict tape intensity?
Since I have a small sample size, I fit a zero inflated negat. Binomial (not
Poisson) model using the "pscl" package.
I built tried two models and got the outputs below.
> model <- zeroinfl(Int_Cesto ~ CAPI, dist = "negbin", EM = TRUE)
Call:
zeroinfl(formula = Int_Cesto ~ CAPI, dist = "negbin", EM = TRUE)
Count model coefficients (negbin with log link):
(Intercept) CAPI
-2.99182 0.06817
Theta = 0.4528
Zero-inflation model coefficients (binomial wit...
2010 Feb 04
1
Zero inflated negat. binomial model
...s. I'm interested in looking at the association between these two variables, i.e. how well does chick size predict tape intensity?
I fit a zero inflated negat. binomial model using the "pscl" package.
I built my model as follows and got the output below.
> model <- zeroinfl(Int_Cesto ~ CAPI, dist = "negbin", EM = TRUE)
> model
Call:
zeroinfl(formula = Int_Cesto ~ CAPI, dist = "negbin", EM = TRUE)
Count model coefficients (negbin with log link):
(Intercept) CAPI
-2.99182 0.06817
Theta = 0.4528
Zero-inflation model coefficients (bino...