【回归分析】logistic regresssion中的拟合优度检验（goodness-of-fit test）

参考资料：【回归分析】台湾交通大学-黄冠华教授 goal : to test how well the used model fits to the observed data. in the linear regression,the coeffient of determination R 2 R^2 R2, which represents the fraction of the total

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