变量

数量

均值

标准差

最大值

最小值

Investor

9668

0.0165

0.128

1

0

Psos

9668

−0.0110

0.118

0.373

−0.453

Pstl

9668

−0.0125

0.118

0.362

−0.475

Size

9668

22.32

1.418

27.29

19.84

Instituation

9668

5.800

6.250

28.14

0.000800

Lev

9668

0.424

0.212

0.938

0.0610

ROA

9668

0.0416

0.0674

0.215

−0.288

TOP1

9668

33.56

14.43

73.19

8.340

SOE

9668

0.316

0.465

1

0

Big4

9668

0.0626

0.242

1

0

Indep

9668

0.376

0.0531

0.571

0.333

BoardNum

9668

8.517

1.748

15

5

Dual

9668

0.296

0.457

1

0

Anaattention

9668

1.465

1.161

3.761

0