Frisch–Waugh–Lovell theorem (source code)

= Frisch–Waugh–Lovell theorem
{wiki=Frisch–Waugh–Lovell_theorem}

The Frisch-Waugh-Lovell (FWL) theorem is an important result in econometrics that deals with the properties of linear regression models. It provides a method to interpret the results of regression analyses, particularly when some of the independent variables are of primary interest while others are controlled for.