求助两个问题。第一，做Hausman检验的时候出现了以下语句：Note: the rank of the differenced variance matrix (3) does not equal the number of coefficients being tested (5); be sure this is what you expect, or there may be problems computing the test. Examine the output of your estimators for anything unexpected and possibly consider scaling your variables so that the coefficients are on a similar scale.出现这个语句该怎么解决呢？第二，检验结果显示 Prob>chi2 = 0.0904是意味着豪斯曼检验不通过吗？需要进行处理吗？谢谢！
Stata运行结果如下：
![W[BYVU2OD`]I%JMOULAR66Q.png](https://bbs-pic.datacourse.cn/forum/202112/30/204647u7tgebdwb7h7tstd.png "W[BYVU2OD`]I%JMOULAR66Q.png")
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