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利用情感启发式设计出经典的“I love NY"标识的人是()。
A.Milton Glaser
B.Milton Fridman
C.Thomas Glaser
D.David Glaser
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.Milton Glaser
B.Milton Fridman
C.Thomas Glaser
D.David Glaser
A.loving
B.love
C.loved
D.being loved
A.坚持以外部动机激发为主,内部动机为辅
B.实施启发式教学
C.利用学习结果的反馈作用
D.适时运用竞赛与评比
A、That sounds very nice
B、Me too
C、Yes, I.d love to
D、It.s my favorite
A.“文明”
B.“情感”
C.“智慧”
D.“原创性”
— I have problems to fall asleep because it seems difficult for my brain to slow down.
— _______________. Do some exercises!
A. You must have had too much in your dinner
B. You must be under a lot of stress
C. You should go to see a doctor
D. You must be in love with somebody
利用AFFAIRS.RAW中的数据。
(i)给定的数据中有多少是女人?变量naffairs是一个已婚的人婚外情的次数(尽管大部分的数据是按照一定的区间分组的)。从来没有过婚外情的女人的比例是多大?次数最多的是多少?
(ii)用age,yrsmarr,kids,educ,vryrel,smeral,slghtrel和notrel作为变量,估计一个泊松模型,解释vryrel的系数并以最大似然标准误为基础讨论t值。
(iii)现在得到了当方差和均值与教材(17.35)相关的情况下的标准误,相比于泊松MLE模型下的t值,本题估计出的t值的解释能力如何?
利用GPA2.RAW中的数据,可估计出如下方程:
变量sat是SAT的综合分数,hsize是以百人计的学生所在高中毕业年级的学生规模,female是一个性别虚拟变量,而black是一个种族虚拟变量(黑人取值1,其他人则取值0)。
(i)有很强的证据支持模型中应该包括hsize”吗?从这个方程来看,最优的高中规模是什么?
(ii)保持hsize不变,非黑人女性和非黑人男性之间SAT分数的估计差异是多少?这个估计差异的统计显著性如何?
(iii)非黑人男性和黑人男性之间SAT分数的估计差异是多少?检验其分数没有差异的原假设,备择假设是他们的分数存在差异。
(iv)黑人女性和非黑人女性之间SAT分数的估计差异是多少?为了检验这个差异的统计显著性,你需要怎么做?
阅读短文,在空白处填入适当的介词。
With One day, Mr. Green told his students to make sentences (1) the words“love, hate” and so on. The kids were all busy (2) the work on their notes.
(3) several minutes many of them handed in their work (4) the teacher.Mr. Green read the notes one (5) one. And most(6)the sentences made by the children were good. There was a big smile(7)his face. Just (8) that time he found a piece of red paper. On it there was such a sentence,“I love my mother better than my father.”“Eim... OK!”said Mr.Green,“but..”He turned over the paper.
He found there were no names (9) that paper. He read the sentence again and again. And slowly the big smile (10) his face was gone. Then he said to the class, “ Whose paper is this?”Tom stood up and said,“It's mine, sir.”
A.我总是在自己身上找到对伊甸之西的畏惧和对伊甸之东的喜爱。
B.我总是在我内心深处找到对伊甸之西的畏惧和对伊甸之东的喜爱。
C.我发现自己身上一直有对伊甸之西的畏惧,对伊甸之东的喜爱。
D.我发现自己一直对伊甸之西怀有畏惧,而对伊甸之东怀有喜爱。
如果我们在经典线性模型假定下从式(6.38)开始,假定n很大,并忽略中的估计误差,那么y0的一个95%预测区间就是
。
(ii)在CEO薪水的例子中,验证第(i)部分中的条件是成立的。