Owing to the rich shapes of Generalised Lambda Distributions (GLDs), GLD standard/quantile regression is a competitive flexible model compared to standard/quantile regression. The proposed method has some major advantages: 1) it provides a reference line which is very robust to outliers with the attractive property of zero mean residuals and 2) it gives a unified, elegant quantile regression model from the reference line with smooth regression coefficients across different quantiles. The goodness of fit of the proposed model can be assessed via QQ plots and KolmogorovSmirnov tests and data driven smooth test, to ensure the appropriateness of the statistical inference under consideration. Statistical distributions of coefficients of the GLD regression line are obtained using simulation, and interval estimates are obtained directly from simulated data.
Package details 


Author  Steve Su, with contributions from: R core team for qqgld.default function. 
Date of publication  20170228 10:58:56 
Maintainer  Steve Su <allegro.su@gmail.com> 
License  GPL (>= 3) 
Version  1.0.7 
Package repository  View on CRAN 
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