YL2024-05-10 09:01:09
Module 9-书P245-不明白题干中说的Test the null hypothesis that each of these correlations, individually, is equal to zero against the alternative hypothesis that it is not equal to zero. 表格Exhibit 3中给出的sample correlation都不等于0, 那为什么原假设中还需要检验“是否每个相关性都等于零”?
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Wolf2024-05-10 11:58:58
同学你好,
题目中给出的correlation是都不等于0,这个是根据36个月的observations得出的表格,这道题的目的是用假设检验检验在5%的significant level 这个correlation是否真的不等于0,来检验这个结果的可靠性。题干中说null hypothesis是假设每个correlation都等于0,alternative就是每个correlation都不等于0
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