变量 | 观测值 | 平均值 | 标准差 | 最小值 | 最大值 |
epi | 1072 | 5.796 | 3.405 | 0 | 11.519 |
talk | 1072 | 0.129 | 0.335 | 0 | 1 |
soe | 1072 | 0.482 | 0.5 | 0 | 1 |
size | 1072 | 22.533 | 1.134 | 20.246 | 25.705 |
age | 1072 | 11.32 | 6.254 | 1 | 24 |
flow | 1072 | 0.048 | 0.07 | −0.152 | 0.229 |
first | 1072 | 36.582 | 14.925 | 10.007 | 74.18 |
roa | 1072 | 0.052 | 0.15 | −1.013 | 0.335 |
cash | 1072 | 7.098 | 0.661 | 5.108 | 8.687 |
board | 1072 | 2.149 | 0.171 | 1.609 | 2.708 |
leve | 1072 | 0.496 | 0.209 | 0.056 | 0.952 |
law | 1072 | 8.102 | 4.59 | 1.84 | 16.12 |
market | 1072 | 7.986 | 1.6 | 4.49 | 9.95 |
city_GDP | 1072 | 11.193 | 0.510 | 10.042 | 12.068 |