negative.binomial {MASS} | R Documentation |
Specifies the information required to fit a Negative Binomial generalized
linear model, with known theta
parameter, using glm()
.
negative.binomial(theta = stop("'theta' must be specified"), link = "log")
theta |
The known value of the additional parameter, |
link |
The link function, as a character string, name or one-element
character vector specifying one of |
An object of class "family"
, a list of functions and
expressions needed by glm()
to fit a Negative Binomial
generalized linear model.
Venables, W. N. and Ripley, B. D. (1999) Modern Applied Statistics with S-PLUS. Third Edition. Springer.
glm.nb
, anova.negbin
,
summary.negbin
# Fitting a Negative Binomial model to the quine data # with theta = 2 assumed known. # glm(Days ~ .^4, family = negative.binomial(2), data = quine)