两组资料,回归系数b大的那一组()。
A.相关系数r也较大
B.相关系数r较小
C.两变量相关较密切
D.两组相关系数大小无一定关系
E.以上都不对
参考答案:D
红利贴现模型的预期现金流即为预期未来支付的()。
A.股息
B.买卖价差
C.卖出价格
D.股息和未来的卖出价格
拼写单词根据句子意思,在空格中填写适当的单词,使句子完整、正确。(共8分)
小题1:February is the month of the year.
小题2:The box is very light, so I can lift it by .
小题3:I can’t help you you tell me what’s wrong.
小题4:As a citizen, we mustn’t do anything the law.
小题5:Lucy was very , so she drank two glasses of water.
小题6:Susan's parents were disappointed when they knew Susan the exam.
小题7:If I my father's birthday, please remind me.
小题8:The book to Alice because her name is on it.