关键词: 经验分布函数, 剩余期望函数, 最小距离估计, 卡方估计

Abstract: The paper is going to introduce some methods about select distributional model、select an estimation technique、iterate to minimize objective function、record estimated parameters、select one or more models which had low value of the objective function and test of fit of selected model by empirical distribution function、mean of residual life function、minimum distance and minimum chi square.This should prove especially useful to those readers who want to set up a computer system to perform the model fitting operation.