Quantiles regression

For the simplest regression model asymptotic estimate normality is found under enough wide assumptions on samples number r and their volumes ni at times ti. Condition of the set (ti, ni) ″nondegeneracy″ is assumed to be fullfilled. The condition covers the limiting cases when ni const(r tends to infinity) and rconst(nin/r tends to infinity) as well as the situations when the samples are of essentially different orders.