【单选题】关于工具变量法中的工具变量,说法错误的是
【简答题】We are late for school ____the heavy snow . A,because B, because of C, as
【单选题】如果在强相关性检验中,发现当前使用的工具变量是弱工具变量,那么以下说法错误的是:
A.
此时不存在任何可以解决的方法, IV 方法不再适用
B.
可以选择更好的工具变量,不再使用这个弱相关性的工具变量
D.
可以利用有限信息最大似然法 LIML ,在存在弱工具变量的情况下, LIML 的小样本性质可能优于 2SLS
【单选题】What can we learn from the conversation?
A.
The woman is from the country.
B.
The man is living in the country now.
C.
The air in the city is as fresh as in the country.
【简答题】A.Because we often take our ability of listening for granted. B.Because we are surrounded by all sorts of noises. C.Because we do not spend much time listening. D.Because we do not attach great import...
【单选题】选择器 【 #main.title div#name p 】的权值是多少
【单选题】We are short energy and water the large population. [ ]
【判断题】选择器 【#main.title div#name p 】的权值是212。( )
【单选题】选择器【#main.title div#name p】的权值是多少( )。