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计量经济学理论/解决多重共线性
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来自 Wikibooks，开放世界，免费书籍
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Econometric Theory
制作复合变量，将相关的解释变量形成变量
移除与其他变量相关的解释变量
删除冗余变量，适用于公式中的两个或更多个变量本质上测量相同内容的情况
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书籍：计量经济学理论
华夏公益教科书
