betareg (version 1.2.1)

vcov.betareg: Calculate Variance-Covariance Matrix for a betareg Fitted Model Object

Description

Returns the variance-covariance matrix of the main parameters of a betareg fitted model object.

Usage

vcov.betareg(object, ...)

Arguments

object

a fitted model using betareg.

...

further arguments passed to or from other methods.

Value

• A matrix of the estimated covariances between the parameter estimates in the linear or non-linear predictor of the model.

Examples

data(pratergrouped)
fit <- betareg(oil ~ batch1 + batch2 + batch3 + batch4 + batch5 + 
batch6 + batch7 + batch8 + batch9 + temp, data=pratergrouped)
vcov(fit)