题目内容

【多选题】多重共线性的解决方法主要有()。

A. 保留重要的解释变量,去掉次要的或替代的解释变量 ‍
B. 利用先验信息改变参数的约束形式
C. 变换模型的形式 ‍
D. 综合使用时序数据与截面数据 ‍
E. 逐步回归法以及增加样本容量

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【多选题】多重共线性的解决方法主要有()。

A. 保留重要的解释变量,去掉次要的或替代的解释变量 ‍ B. 利用先验信息改变参数的约束形式 C. 变换模型的形式 ‍ D. 综合使用时序数据与截面数据 ‍ E. 逐步回归法以及增加样本容量

What is the necessity of digital educational technology? ( )

What is the author’s attitudes towards the college life in the Internet age? ( )

What are the advantages of studying online in the dorm? ( )

The college campus, long a place of scholarship and frontiers of new technology, is being transformed into a new age of electronics by a fleet of laptops, smartphones and connectivity 24 hours a day. ( )

A. 保留重要的解释变量,去掉次要的或替代的解释变量 ‍
B. 利用先验信息改变参数的约束形式
C. 变换模型的形式 ‍
D. 综合使用时序数据与截面数据 ‍
E. 逐步回归法以及增加样本容量