在进行异方差修正后系统显示如下语句“year is not regularly spaced or does not have intervals of delta -- use the force option to treat the intervals as though they were regular”
请问是什么原因,是缺失数据吗?应如何解决,请老师们指点。
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楼主: lizhenfeng6
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[其他] stata异方差修正时出现问题 |
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