Methods for selection models
# S3 method for selection
logLik(object, ... )# S3 method for selection
nobs(object, ... )
# S3 method for selection
nObs(x, ... )
# S3 method for selection
print( x, digits = max(3, getOption("digits") - 3), ... )
object of class selection.
the minimum number of significant digits of the coefficients to be printed.
further arguments (currently ignored).
The logLik method returns the log likelihood value of the model.
The nobs and nObs methods return the number of observations.
The print method prints the call and the estimated coefficients.
Furthermore, some standard methods can be applied to selection models:
The lrtest method can be used to perform
likelihood-ratio tests.
The stdEr method returns the vector
of the standard errors of the estimated parameters.
The methods coef.selection,
fitted.selection
model.frame.selection,
model.matrix.selection,
residuals.selection,
summary.selection,
and vcov.selection
are described at seperate help pages.