如何将截面数据整理为面板数据？
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| MP4 | N/A | 480P | Download |
| MP4 | N/A | 480P | Download |
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wind上下载的数据怎么导入stata？如何快速将截面数据转为面板数据？看了这个视频你就明白啦！（是自己在写论文的时候总结的方法，不一定是最简单，但是希望能帮被论文折磨的你！）！
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