| AchievementAwardsRCT | Achievement Awards Demonstration program |
| coef_test | Test all regression coefficients in a fitted model |
| dropoutPrevention | Dropout prevention/intervention program effects |
| MortalityRates | State-level annual mortality rates by cause among 18-20 year-olds |
| vcovCR | Cluster-robust variance-covariance matrix |
| vcovCR.default | Cluster-robust variance-covariance matrix |
| vcovCR.gls | Cluster-robust variance-covariance matrix for a gls object. |
| vcovCR.ivreg | Cluster-robust variance-covariance matrix for an ivreg object. |
| vcovCR.lm | Cluster-robust variance-covariance matrix for an lm object. |
| vcovCR.lme | Cluster-robust variance-covariance matrix for an lme object. |
| vcovCR.plm | Cluster-robust variance-covariance matrix for a plm object. |
| vcovCR.rma.mv | Cluster-robust variance-covariance matrix for a robu object. |
| vcovCR.rma.uni | Cluster-robust variance-covariance matrix for a rma.uni object. |
| vcovCR.robu | Cluster-robust variance-covariance matrix for a robu object. |
| Wald_test | Test parameter constraints in a fitted linear regression model |