变量 | 备注 | 观测值 | 均值 | 标准差 | Min | Max |
E | 效率 | 105 | 0.47886 | 0.33891 | 0.049 | 1.31 |
X | gdp | 105 | 5107.88 | 7075.80 | 804.63 | 30664.8 |
Y | highway | 105 | 10499.3 | 6710.49 | 716 | 24816 |
Z | tertiary | 105 | 2830.96 | 4660.92 | 390.87 | 20202.8 |
T | covid19 | 105 | 0.400 | 0.492 | 0 | 1 |