【迴歸分析】logistic regresssion中的擬合優度檢驗（goodness-of-fit test）

參考資料：【迴歸分析】臺灣交通大學-黃冠華教授 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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