| hcci-package | Interval Estimation of Linear Models with Heteroskedasticity |
| HC | Covariance Matrix - (HC0, HC2, HC3, HC4 and HC5) |
| hcci | Interval Estimation of Linear Models with Heteroskedasticity |
| Pboot | Percentile Bootstrap Confidence Interval (Wild Bootstrap) - Linear Models Heteroskedasticity |
| QT | Quasi-t test in linear regression models |
| schools | US Expenditures for Public Schools |
| Tboot | Bootstrap-t Confidence Interval (Wild Bootstrap) - Linear Models Heteroskedasticity |