User contributions for 167.230.140.8

4 December 2014

• 00:0100:01, 4 December 2014 diff hist −314 Quantile regression →Sample quantile: Corrected the sign in the second line of the formula, from <math>(1-\tau)</math> to <math>(\tau-1)</math>. Note that <math>(1-\tau)\sum_{y_{i}<q}(y_{i}-q)</math> is negative, which drives the arg min to infinity. current