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【多选题】
模型具有多重共线性时，仍采用普通最小二乘估计法对参数进行估计，会导致的问题有( )A.
完全共线性下参数估计量不存在
B.
近似共线性下普通最小二乘法参数估计量的方差变大
C.
参数估计量不具有有效性
D.
参数估计量的经济含义不合理
E.
变量的显著性检验和模型的预测功能失去意义
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举一反三
【多选题】Which of the following constitutes the driving offense?
A.
to overtake a car
B.
to run red lights
C.
driving without license
D.
to occupy emergency lanes
【简答题】客房盗窃发生的原因?
【单选题】This is your second ______ offense this month.
A.
drunk driving
B.
drinking driving
C.
drank driving
D.
drink driving
【简答题】Mrs. Jones was over eighty, but she still drove her old car like a woman half her age. She loved driving very fast, and was proud of the fact 1 she had never, in her thirty-five years of driving, been...
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