NO.PZ201709270100000207
问题如下：
7. Based on her estimated Durbin–Watson statistic, Honoré should:
选项：
A.fail to reject the null hypothesis.
B.reject the null hypothesis because there is significant positive serial correlation.
C.reject the null hypothesis because there is significant negative serial correlation.
解释：
A is correct. The critical Durbin–Watson (D–W) values are dl = 1.63 and du = 1.72. Because the estimated D–W value of 1.81 is greater than du = 1.73 (and less than 2), she fails to reject the null hypothesis of no serial correlation.
助教老师说这题不在考纲中了，但是我10月份报名课程的时候，看讲义的时候看到过这个图，难道这个课程考纲又改了？
