回答(1)
ES2023-03-27 15:36:54
同学,你好
I.The coefficient of determination is 84.7%.
指r
先求 R square=998.56 / 1178.93
再对 R square进行开根号
II.The industry index coefficient is significant at the 99% confidence level.
求t=2.4/0.65=3.69
它说是8年的季度数据,所有有32个季度数据(>30),根据CLT,可以查Z table
双尾,critical value=2.58
III.The correlation coefficient between the stock’s returns and the return on the industry index is 0.42.
rho
先求 R square=998.56 / 1178.93
再对 R square进行开根号
IV.The coefficient between the stock’s returns and the return on the industry index is statistically different from zero at the 99% confidence level.
跟II同
加油,祝你顺利通过考试~
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