变量名

均值

标准差

最大值

最小值

样本量

tfp

0.012047

0.371776

2.753158

−2.79275

7863

treat

0.969732

0.171336

1

0

7863

post

0.487091

0.499865

1

0

7863

treat*post

0.477808

0.499539

1

0

7863

ln_earning

21.41518

1.325276

27.45514

17.03018

7863

ln_size

21.98607

1.164642

27.30741

17.75689

7863

staff

5095.178

11439.7

295862

30

7863

stkholder

45256.47

62656.27

1408570

3

7863

exearning

6.12E+08

2.09E+09

6.40E+10

0

7863

ln_labour

20.93485

1.480129

27.44578

15.12936

7863

exstrength

0.12913

0.130756

0.499842

0

7863

state

0.317818

0.465658

1

0

7863

private

0.361185

0.480375

1

0

7863

foreign

0.020984

0.143341

1

0

7863