Komarova, Tatiana; Severini, Thomas A.; Tamer, Elie T. - In: Journal of Econometric Methods 1 (2012) 1, pp. 2-14
Abstract We introduce a notion of median uncorrelation that is a natural extension of mean (linear) uncorrelation. A scalar random variable Y is median uncorrelated with a k-dimensional random vector X if and only if the slope from an LAD regression of Y on X is zero. Using this simple...