【单选题】【消耗次数:1】
现象之间的相关密切程度愈高,则相关系数愈接近于
0
0.3_0.5
0.8_0.9
±1
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相关题目
【单选题】 现象之间的相关密切程度愈高,则相关系数愈接近于
①  0
②  0.3-0.5
③  0.8-0.9
④  ±1
【判断题】 两变量的相关系数越接近于0,线性密切程度越低
①  正确
②  错误
【多选题】 相关系数r=0.9,这表明现象之间存在着?
①  高度相关关系
②  低度相关关系
③  低度负相关关系
④  高度正相关关系
⑤  低度正相关关系
【单选题】 相关系数越接近±1,表明变量之间的线性相关程度()
①  越小
②  一般
③  越大
④  不确定
【判断题】 回归系数b与相关系数r都可用来判断现象之间的相关密切程度。
①  正确
②  错误
【判断题】 回归系数和相关系数都可以用来判断现象之间相关的密切程度。
①  正确
②  错误
【单选题】 直线相关系数的绝对值接近1时,说明两变量相关关系的密切程度是?
①  完全相关
②  微弱相关
③  无线性相关
④  高度相关
【单选题】 两个变量相关系数可以表面现象的关联程度,下列相关系数中最高的是()
①  相关系数越接近于0.85
②  越接近于-0.96
③  越接近于0
④  接近0.5
【判断题】 甲产品的产量与单位成本的相关系数是-0.9,乙产品的产量与单位成本的相关系数是0.8,因此乙比甲的相关程度高。
①  正确
②  错误
【判断题】 相关系数的大小可以说明两个现象之间的相关关系密切程度。
①  正确
②  错误
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【单选题】 A: I am not interested in fishing. B: [填空].
①  I do too.
②  Arent you?
③  Neither am I.
④  So am I.
【单选题】 A: Shall we go out for dinner tonight? B: [填空].
①  You are right
②  Have a nice time
③  Thats a good idea
④  My pleasure
【单选题】 A: This is like the best film Ive ever seen. B: [填空]. Im trying to concentrate on my work.
①  Cut it short
②  Turn it over
③  Keep it down
④  Bring it up
【单选题】 A: Thanks a lot. I really enjoyed your company. B: Dont mention it. [填空].
①  Sorry to keep you out
②  Many happy returns of the day
③  Youre too polite
④  Me too
【单选题】 A: [填空]. Where was I? B: You were talking about your trip to South Africa.
①  What did I hear
②  Lets back up
③  Lets check in
④  What were you talking about
【单选题】 A: Please help yourself to the fish. B:[填空]
①  Thanks , but I dont like the fish.
②  Sorry, I cant help.
③  Well, what about you?
④  Oh, I cant.
【单选题】 A: May I use your computer this afternoon? B: Im sorry, but I have to finish typing this term paper today. A: [填空].
①  It doesnt matter
②  Thank you just the same
③  Do as you please
④  Never mind
【单选题】 A: Would you rather watch TV or go for a walk? B: The TV program is good today. [填空] A: Cool. Lets go.
①  What a pity!
②  I hate to leave.
③  But I need the exercise more.
④  You know what I mean.
【单选题】 A: Can I take a message? Ill let Mr. Liu know as soon as he comes back. B: [填空].
①  I hope he will call me back
②  No. Ill call somebody else
③  Dont bother. Ill try his cell
④  I dont think its appropriate
【单选题】 A: Whats there to do at night? B: There are clubs, concerts, players and so on. [填空]!
①  You make it
②  You name it
③  You manage it
④  Yes, I didnt hear you