bellreg (version 0.0.2.1)

vcov.zibellreg: Covariance of the regression coefficients

Description

Covariance of the regression coefficients

Usage

# S3 method for zibellreg
vcov(object, ...)

Value

the variance-covariance matrix associated with the regression coefficients.

Arguments

object

an object of the class bellreg

...

further arguments passed to or from other methods.

Examples

# \donttest{
data(cells)
fit <- zibellreg(cells ~ smoker + gender|smoker + gender, data = cells)
vcov(fit)
# }