Routines for Fit, Inference and Diagnostics in LAD Models

LAD (Least Absolute Deviations) estimation for linear regression, confidence intervals, tests of hypotheses, methods for outliers detection, measures of leverage, methods of diagnostics for LAD regression, special diagnostics graphs and measures of leverage. The algorithms are based in Dielman (2005) , Elian et al. (2000) and Dodge (1997) . This package also has two datasets "houses" and "pollution", respectively, from Narula and Wellington (1977) and Santos et al. (2016) .