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【单选题】
已知含有截距项的三元线性回归模型估计的残差平方和为800,估计用的样本容量为24,则随机误差项u i 的方差估计量为A.
33.33
B.
40
C.
38.09
D.
36.36
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举一反三
【简答题】小题1:I am poor in speaking English because I don’t have the correct _____. 小题2:In the past few years, we have _____in saving thousands of people in er. 小题3:I think they have gone to the airport to ...
【简答题】漏交作业补交-每人最多一次
【简答题】作业补交(每人最多一次)
【简答题】She has been saving money in the past two years, so she is ______ that in the coming summer she will be able to afford a journey abroad.A. confident
【单选题】Which of the following italicized part indicate concession?
A.
He has studied martial arts for years .
B.
She has not succeeded for her effort .
C.
Mary has been saving up for the upcoming holiday .
D.
I would have done it if it had not been for you .
【简答题】She has been saving money in the post tow year, so she is ________ that in the coming summer she will be able to afford a journey abroad.
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