Within a multiple regression model, none or few of the covariates are statistically significant, yet the overall variance of the dependent variable explained by the covariates is high (this is ...

This article introduces the multivariate regression-discontinuity design (MRDD), where multiple assignment variables and cutoffs may be used for treatment assignment. For an MRDD with two assignment ...

The statistical literature and folklore contain many methods for handling missing explanatory variable data in multiple linear regression. One such approach is to incorporate into the regression model ...