问题
单项选择题 B1型题
双变量正态分布资料，当样本相关系数r=0.532，r>r
时，统计结论是（）
A.存在直线相关和回归关系
B.存在因果关系
C.不存在直线相关和回归关系
D.不存在函数关系
E.存在函数关系
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
双变量正态分布资料，当样本相关系数r=0.532，r>r时，统计结论是（）
A.存在直线相关和回归关系
B.存在因果关系
C.不存在直线相关和回归关系
D.不存在函数关系
E.存在函数关系
参考答案：A
A certain student passed all his examinations. Then he went to college to 21 his studies. There he wrote down his 22 for a course in English, but after the first 23 , he didn’t go to it any more. The English lecturer 24_this student was always absent (缺席的) and thought he had 25_to another course, so he was 26 when he saw the boy’s name on the list of students who wanted to take the English 27at the end of this year. The lecturer had 28 a difficult paper, which followed his 29 closely, and he was eager (热切的) to see 30 this student would answer the questions. He 31__the boy’s answers would be very bad, but when they 32 him and he examined them 33 , he was able to find only one small mistake in them. As this surprised him greatly, he 34 the paper repeatedly but still couldn’t find more than one mistake, so he 35 for the student to question him about it. When he came and sat down, the lecturer asked him, “I 36 you came to my first lecture and you’ve been absent from all the others. But I’ve examined your 37 carefully and I’ve found only one small mistake in it. I’m curious (好奇的) to know your 38 .” “I’m very 39 about that mistake,” answered the student. “After the examination, I 40 what I should have done. I would not have made that mistake if I had not been confused by your first lecture.”
|