变量 | 均值 | 标准差 | 最小值 | 最大值 | 样本数 |
Patent | 2.902 | 1.389 | 0.693 | 6.829 | 19,477 |
Pledge_d | 0.582 | 0.233 | 0.000 | 1.000 | 15,014 |
Pledge_r | 0.134 | 0.154 | 0.000 | 0.607 | 28,652 |
TPU | 1.465 | 0.528 | 0.474 | 2.260 | 28,652 |
Bigholder | 0.367 | 0.155 | 0.091 | 0.761 | 28,652 |
SOE | 0.467 | 0.499 | 0.000 | 1.000 | 28,652 |
SR | 0.050 | 0.078 | 0.000 | 0.291 | 28,652 |
DFL | 1.472 | 1.151 | 0.508 | 8.632 | 28,652 |
TobinQ | 2.162 | 1.937 | 0.213 | 10.810 | 28,652 |
ROE | 0.065 | 0.125 | −0.685 | 0.349 | 28,652 |
Size | 3.400 | 1.272 | 0.920 | 7.368 | 28,652 |
PPE | 0.242 | 0.175 | 0.002 | 0.743 | 28,652 |