问题如下图:
选项:
A.
B.
C.
解释:
请问这道题需要通过计算吗?重新算t的值,然后进行判断?
NO.PZ201512020300000106 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. 如标题这道题中的原假设是什么?拒绝原假设代表显著还是不显著?c中的for F ant 是什么意思?
NO.PZ201512020300000106 请问老师,此题中anova 表里significanF就是F检验的P-value 是吗;另外我们说p-value小于a时拒绝原假设,此题的a是不是就是0.05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. P value=0,怎么样都小于5%的1.96criticvalue啊,所以应该接受原假设,not significant啊,应该选B啊
significant 5%? 1.这里的原假设是二者关系=0 ? 2.然后在5% 的范围内是接受域, 就是原假设在接受域是不显著的? 3。=0是否意味着x和Y无关? 4.如果是接受就是 not significant , 如果拒绝就是significant? 5.是不是所有significant都是检验x和Y是否为0 接受就是not significant?
老师,您好!这道题c为什么要看p-valve for F?F-statistic不是等于t的平方吗?