在stata中做方差分解,为什么没有显示标准差呢,全是点点 这是为什么?
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| | (1) (1) | (2) (2) |
| step | fevd S.E. | fevd S.E. |
|--------+-----------------------+-----------------------|
|0 | 0 . | 0 . |
|1 | 1 . | 0 . |
|2 | .987725 . | .012275 . |
|3 | .936396 . | .063604 . |
|4 | .853844 . | .146156 . |
|5 | .747957 . | .252043 . |
|6 | .654513 . | .345487 . |
|7 | .581893 . | .418107 . |
|8 | .531581 . | .468419 . |
|9 | .500489 . | .499511 . |
|10 | .483103 . | .516897 . |
|11 | .475075 . | .524925 . |
|12 | .473946 . | .526054 . |
|13 | .477313 . | .522687 . |
|14 | .481757 . | .518243 . |
|15 | .483836 . | .516164 . |
|16 | .48167 . | .51833 . |
|17 | .475465 . | .524535 . |
|18 | .466808 . | .533192 . |
|19 | .457585 . | .542415 . |
|20 | .449234 . | .550766 . |
+--------------------------------------------------------+