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Jul 29

Quantile Regression

Posted by abiao at 07:48 | Code » R/Splus | Comments(0) | Reads(7930)
Quantile regression is a statistical technique intended to estimate, and conduct inference about, conditional quantile functions. Just as classical linear regression methods based on minimizing sums of squared residuals enable one to estimate models for conditional mean functions, quantile regression methods offer a mechanism for estimating models for the conditional median function, and the full range of other conditional quantile functions. By supplementing the estimation of conditional mean functions with techniques for estimating an entire family of conditional quantile functions, quantile regression is capable of providing a more complete statistical analysis of the stochastic relationships among random variables.


http://www.econ.uiuc.edu/~roger/research/rq/rq.html
wiki(Quantile regression)


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