变量 | 观测值 | 均值 | 标准差 | 最小值 | 最大值 |
TQ | 23,230 | 1.968 | 1.433 | 0.674 | 33.95 |
Lev | 23,230 | 0.449 | 0.208 | 0.00710 | 0.995 |
ROE | 23,230 | 0.0241 | 1.419 | −176.4 | 2.324 |
age | 23,230 | 2.851 | 0.354 | 2.303 | 3.434 |
patent | 23,230 | 1.771 | 2.383 | 0 | 11.21 |
size | 23,230 | 22.31 | 1.351 | 18.27 | 28.64 |
fix | 23,230 | 0.228 | 0.173 | 0 | 0.971 |
RDS | 16,399 | 17.80 | 1.687 | 5.094 | 25.03 |
Firstpct_ | 23,230 | 0.350 | 0.153 | 0.0287 | 0.900 |
ROA | 23,230 | 0.0343 | 0.0751 | −2.834 | 0.786 |
BM | 23,230 | 0.645 | 0.252 | 0.0295 | 1.485 |