Problem
When discussing quantile regression, we confined ourselves to the standard Mincer equation. However, the CPS1988 data contain further explanatory variables, namely the factors ethnicity, smsa, region, and parttime. Replicate the LAD regression (i.e., the quantile regression with τ = 0.5) results from Bierens and Ginther (2001) using these covariates.
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.