AirEntrain is a categorical (yes/no) variable and cannot be used in regression without transforming it to a numerical {0,1} dummy/indicator variable. We can use our recoding skills from Lesson 5 to do ...

Indeed, many commercially-available regression-analysis packages contain specific features to facilitate the construction of new variables (i.e., new columns of data) from products of existing ...

Conditions are established conditions under which it is possible to identify the average effect of the dummy endogenous regressor in a weakly separable model without relying on parametric functional ...

Let y be a vector of endogenous variables and let w be a vector of covariates, parameters, and errors or unobservables that together are assumed to determine y. A structural model y = H (y, w) is ...