Displaying 2 results from an estimated 2 matches for "odtest".
Did you mean:
adtest
2009 Oct 26
1
GLMMPQL and negbinomial: trouble with the X-axis in PREDICT
I'm having some difficulty with graphing outputs of a GLM model I've
been working. I have count data for both my predictor (only 1) and
response variables, and I have pseudoreplication which I've modeled as
a random effect. The odTest() from pscl:: indicated that the negative
binomial distribution fit better than Poisson, and I then proceeded by
estimating theta from glm.nb.
My residual plot of m1 looks great, and now I'd like an output showing
the relationship between BERRIES and the respose, but I can't seem to
get &qu...
2007 Apr 10
1
When to use quasipoisson instead of poisson family
It seems that MASS suggest to judge on the basis of
sum(residuals(mode,type="pearson"))/df.residual(mode). My question: Is
there any rule of thumb of the cutpoiont value?
The paper "On the Use of Corrections for Overdispersion" suggests
overdispersion exists if the deviance is at least twice the number of
degrees of freedom.
Are there any further hints? Thanks.
--
Ronggui