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Sampling Covariance Matrix of Differences of Standardized Regression Slopes
# S3 method for diffbetasandwich vcov(object, ...)
Returns a matrix of the variance-covariance matrix of differences of standardized regression slopes.
Object of class diffbetasandwich.
diffbetasandwich
additional arguments.
Ivan Jacob Agaloos Pesigan
object <- lm(QUALITY ~ NARTIC + PCTGRT + PCTSUPP, data = nas1982) std <- BetaHC(object) diff <- DiffBetaSandwich(std) vcov(diff)
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