econometrics

Statistical Setting We observe data $(X_i, Y_i, W_i) \in \mathcal{X} \times \mathbb{R} \times {0,1}$ according to the potential outcomes model and we assume the following: (SUTVA) ${Y_i(0), Y_i(1)} \perp W_i

Hausman-Taylor in R The following example is from here. Example: The fixed effects model, however, does not allow time-invariant variables such as educ or black. Since the problem of the