Were this a fixed-effects model the usual, assumption would be that the E; ki are random disturbances drawn independently,, From a distri) bution with mean zero and unknown variance er;. In this model I make the additional assumption that all of. The other effects like the, error term are realizations, of random processes with zero means and constant but unknown,,, Variances.Er;,,,, er er; ER and cri.
การแปล กรุณารอสักครู่..
