PublicSchools           Public school expenditure and income by U.S.
                        jurisdiction
PublicSchools2          Public school expenditure, income, and region
                        by U.S. jurisdiction
coef.hcinfer            Extract model coefficients from an hcinfer
                        object
confint.hcinfer         Confidence intervals for hcinfer objects
hc_methods              Available heteroskedasticity-consistent
                        estimators
hcinfer                 Heteroskedasticity-consistent Wald inference
plot.hcinfer            Plot robust confidence intervals
plot.hcinfer_vcov       Plot HC adjustment factors against leverages
print.hcinfer           Print hcinfer objects
print.hcinfer_vcov      Print hcinfer covariance objects
summary.hcinfer         Summarize heteroskedasticity-consistent
                        inference
summary.hcinfer_vcov    Summarize heteroskedasticity-consistent
                        covariance objects
tests                   Extract coefficient test results
vcov.hcinfer            Extract robust covariance matrices
vcov_hc                 Heteroskedasticity-consistent covariance
                        estimator
