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Extracts dfbetas from uRegress objects by relying on functionality from the stats package. Note that dfbeta and dfbetas are not the same (dfbetas are less than the dfbeta values by a scaling factor that reflects both the leverage of the observation in question and the residual model error).

Usage

# S3 method for uRegress
dfbetas(model, ...)

Arguments

model

an object of class uRegress, as returned by regress.

...

other arguments to pass to stats::dfbetas

Value

a matrix of dfbetas values, with a row for each observation and a column for each model coefficient