变量

最小值

最大值

平均值

标准差

$\text{Ln}\text{R}\&{\text{D}}_{ijt}$

.00

22.41

3.2298

6.60888

${\text{Standard}}_{ij}{}_{\left(t-1\right)}$

.87

2.42

1.6272

.29478

ratio

2.20

89.99

34.5229

15.10145

growth

-1.00

92.15

.4271

3.09156

staff

2.00

2,869,967.00

6570.8088

32,006.19485

age

2.00

51.00

17.0389

5.59903

assets

14.94

30.95

22.1698

1.49092