Calculate Variance-Covariance Matrix for a Fitted Model Object

Usage

vcov(x, ...)

Arguments

x a fitted model object.
... additional arguments for method functions.

Description

Returns the variance-covariance matrix. This is a generic function. Functions with names beginning in vcov. will be methods for this function. lm, glm, nls.

Value

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

See Also

vcov.nlregb


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