变量 | Obs | Mean | Std.Dev | Min | Max | Obs | Mean | Std.Dev | Min | Max |
非国有 | 国有 | |||||||||
LnSGA | 8549 | 0.0616 | 0.268 | −0.672 | 0.975 | 4181 | 0.0298 | 0.231 | −0.672 | 0.975 |
LnS-Cost | 8549 | 0.0806 | 0.389 | −1.453 | 1.454 | 4181 | 0.0335 | 0.396 | −1.453 | 1.454 |
LnA-Cost | 8549 | 0.0367 | 0.309 | −0.970 | 0.915 | 4181 | 0.0198 | 0.255 | −0.970 | 0.915 |
LnSales | 8549 | 0.153 | 0.263 | −0.611 | 1.202 | 4181 | 0.0995 | 0.245 | −0.611 | 1.202 |
ICQ | 8549 | 6.480 | 0.119 | 5.775 | 6.696 | 4181 | 6.488 | 0.136 | 5.775 | 6.696 |
| 8549 | 0.220 | 0.414 | 0 | 1 | 4181 | 0.264 | 0.441 | 0 | 1 |
LEV | 8549 | 0.373 | 0.178 | 0.0600 | 0.850 | 4181 | 0.480 | 0.193 | 0.0600 | 0.850 |
AI | 8549 | 2.293 | 1.517 | 0.420 | 10.66 | 4181 | 2.492 | 1.998 | 0.420 | 10.66 |
ROS | 8549 | 0.114 | 0.0918 | 0 | 0.480 | 4181 | 0.0888 | 0.0906 | 0 | 0.480 |