under given conditions, the some regression forecasting models of containing feign mistake regression coefficient, exactly correspond to the objective law of the target of study.
含佯谬回归系数的回归模型未必都不科学,在某些特定条件下,有些含佯谬系数的回归预测模型可科学合理地反映研究对象的客观变化规律。
we have build the multivariate orthogonal polynomial regression forecasting model of the economical effect on winter wheat production.
采用多元正交多项式回归方法建立了冬小麦生产经济收益预测的多元正交多项式回归模型。
problems of establishing the optimum regression forecasting model are ex-amined. in general, the optimum forecasting model is not obtainable by stepwise regression.
研究了建立最优预测模型问题,指出:逐步回归方法不能保证得到最优预测模型;