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【单选题】
求得Y依X变化的直线回归方程后,必须对回归方程作显著性检验,其目的是为了对()作统计推断A.
样本斜率
B.
总体斜率
C.
样本均数
D.
总体均数
E.
样本分布
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举一反三
【简答题】第一代计算机的逻辑元件是电子管。( )
【单选题】选择题。 — _____? — I'm listening to the teacher. [ ]
A.
What are you
B.
How old are you
C.
What are you doing
D.
Where are you going
【单选题】May I ask _______? Maybe I can help you find it.
A.
what are you looking for
B.
what are you looking
C.
what you are looking for
D.
what you are looking
【简答题】a. Fine. Thank you. And you? b. What do you think? c. What will you do? d. What are you doing? e. I know you like playing the violin. f. What about you? g. I know you love football. g. Good idea A: He...
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