问题如下图:
选项:
A.
B.
C.
解释:
请问老师:
1。这道题目中第一个表中slope的p-value是不是就等于第二个表中的Signifaicace F呀?
2。题目中三个表分别列示内容有啥区别呀,感觉一大堆,分不清是啥。。。
谢谢老师
NO.PZ2015120204000006 No, because the p-values of the intercept anslope are less th0.05. Yes, because the p-values for F ant for the slope coefficient are less th0.05. C is correct. The p-value reflects the strength of the relationship between the two variables. In this case the p-value is less th0.05, anthus the regression of the ratio of cash flow fromoperations to sales on the ratio of net income to sales is significant the 5 percent level. 解析只说了p小于0.05
NO.PZ2015120204000006 The p-value reflects the strength of the relationship between the two variables. 这句话不理解。针对题目最后的问题,为什么是看p来判断呢
No, because the p-values of the intercept anslope are less th0.05. Yes, because the p-values for F ant for the slope coefficient are less th0.05. C is correct. The p-value reflects the strength of the relationship between the two variables. In this case the p-value is less th0.05, anthus the regression of the ratio of cash flow fromoperations to sales on the ratio of net income to sales is significant the 5 percent level. 这道题的假设检验中,原假设应该是什么?
No, because the p-values of the intercept anslope are less th0.05. Yes, because the p-values for F ant for the slope coefficient are less th0.05. C is correct. The p-value reflects the strength of the relationship between the two variables. In this case the p-value is less th0.05, anthus the regression of the ratio of cash flow fromoperations to sales on the ratio of net income to sales is significant the 5 percent level. 老师,我感觉我现在很confuse一点是,F 不是64吗,就是大于1.96,所以拒绝,所以significant,但是好像没有。请教老师,这个到底是谁跟谁比啊
问两个问题。1,B为什么错了??2,这道题目不是一元回归吗,为什么C还要用F检验,不应该就T检验就够了吗??