Ray, Jayant (contributor); … - 2002 - [Elektronische Ressource]
-called Heckit
procedure. It involves the OLS estimation of equation (3) after including an estimate of E(U
i
∗
X
i
and y
i … regression equation (3)–in place of
E(U
i
∗ X
i
and y
i
are observed)–to take sample selection bias in account. In the …