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1问题的提出近年来，回归（线性或非线性的）模型应用十分广泛，并取得了积极的应用效果。不过，在建立回归模型时，有的著（作）者在建立线性或非线性回归模型之后，为检验模型理论值和实际观测值的拟合情况，往往还应用卡方适合性测验方法进行理论值和观察值吻合程度的测验[1
1 PROBLEM PROBLEMS In recent years, regression (linear or nonlinear) models are widely used and have achieved positive application effects. However, when establishing a regression model, some authors often use the chi-square fitness test theory to test the fitting of the model theoretical value and the actual observation value after establishing a linear or non-linear regression model Value and observation of the degree of agreement [1