vif: Variance Inflation Factors
In jhmaindonald/DAAG: Data Analysis and Graphics Data and Functions

Description Usage Arguments Value Author(s) See Also Examples

Variance inflation factors are computed for the standard errors of linear model coefficient estimates.

1	vif(obj, digits=5)

`obj`	A `lm` object
`digits`	Number of digits

A vector of variance inflation factors corresponding to the coefficient estimates given in the lm object.

J.H. Maindonald

lm

litters.lm <- lm(brainwt ~ bodywt + lsize, data = litters)
vif(litters.lm)

carprice1.lm <- lm(gpm100 ~ Type+Min.Price+Price+Max.Price+Range.Price,
    data=carprice)
vif(carprice1.lm)

carprice.lm <- lm(gpm100 ~ Type + Price, data = carprice)
vif(carprice1.lm)