one of "identity", "probit" and "logit" to fit
respectively the linear probability, the probit and the logit
model
method
"ml" for maximum likelihood (the only relevant
method for a regression without instrumental variables),
"twosteps" for two-steps estimator, "minchisq" for minimum
chi-squared estimator and "test" to get the exogeneity test
start
a vector of starting values
...
further arguments
object, x, type
a binomreg object and the type of residuals
for the residuals method