一同学2018-07-21 20:31:23
老师您好! 我想问一下,关于回归方程的检验,我记得为了检验回归模型是正确的,那么原假设应该统一设定的是:H0:βi = 0。因为如果这个检验不能拒绝原假设,说明这个回归系数统计上与零没有差异,那么这个回归模型就有问题。请问什么题目中第二个人的假设写成βi = 1是正确的? 谢谢老师。
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Crystal2018-07-23 17:23:12
同学你好,请你把具体题目的图片贴上来。
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John, FRM, and George, FRM, are discussing the hypothesis they wish to test with respect to the model represented by Yi = B0 B1?Xi εi. They wish to use the standard statistical methodology in their test. George indicates an appropriate hypothesis to test is B1 = 1 with the goal of rejecting it. John indicates an appropriate hypothesis would be that B1 = 0 with the goal of proving it to be true. With respect to these hypotheses:The hypothesis of George is appropriate but not that of John.就是关于回归方程的假设检验,原假设应该是默认为βi=0,并且目标是拒绝原假设?为什么G的说法是正确的?
Cindy2018-07-27 10:09:29
同学您好,原假设并不是所有的都是βi=0的,具体的假设应该结合题目的意思
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