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丹凤朝阳 · 2017年12月07日

问一道题:NO.PZ2015120204000007 [ CFA II ]落在接受域了,应该是显著呀

问题如下图:

    

选项:

A.

B.

C.

解释:



1 个答案

品职辅导员_小明 · 2017年12月07日

注意看正负号,-2.3017是大于-1.96,落在了拒绝域上,所以是显著不为0

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NO.PZ2015120204000007 significant, because the calculatetest statistic ha higher absolute value ththe criticvalue for the test statistinot significant, because the calculatetest statistic ha higher absolute value ththe criticvalue for the test statisti B is correct. Because the absolute value of t = -2.3017 is greater th1.96, the correlation coefficient is statistically significant. criticvalue +/-1.96    

2021-08-23 21:49 1 · 回答

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2021-06-25 23:22 1 · 回答

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2021-05-02 22:07 1 · 回答

NO.PZ2015120204000007 老师这道题如何判断什么是原假设呢,因为题干说的是termine whether the sample correlation between the StellanCPIENG variables is statistically significant.我自己的直接理解原假设就是这两个事情的相关性是significant的,这样对吗,所以T-TEST的值落在拒绝域里,那应该拒绝原假设,即相关性是不significant的,这样的逻辑错在哪了呢?

2021-01-30 14:01 1 · 回答

significant, because the calculatetest statistic ha higher absolute value ththe criticvalue for the test statistinot significant, because the calculatetest statistic ha higher absolute value ththe criticvalue for the test statisti B is correct. Because the absolute value of t = -2.3017 is greater th1.96, the correlation coefficient is statistically significant. t统计量不是双尾检验,拒绝域是小于-critvalue 和大于critvalue -2.3小于1.96就行,答案b是什么意思呢?

2020-09-08 23:57 1 · 回答