Table 2 Descriptive statistics and correlation matrix.

From: Does vertical supervision enhance labor productivity? Evidence from China’s central environmental protection inspection

Variables

Mean

S.D.

Median

1

2

3

4

5

1. LP

13.790

0.851

13.700

     

2. CEPI

0.521

0.500

1.000

0.132***

    

3. Age

2.165

0.794

2.303

0.221***

0.030***

   

4. Size

7.685

1.244

7.610

−0.087***

0.012*

0.249***

  

5. Roa

0.035

0.061

0.035

0.060***

−0.003

−0.197***

0.057***

 

6. Lev

0.426

0.207

0.417

0.319***

−0.023***

0.371***

0.351***

−0.360***

7. Growth

0.172

0.422

0.100

0.118***

0.052***

−0.055***

−0.002

0.196***

8. Capin

2.594

2.212

1.971

−0.158***

−0.004

0.130***

−0.331***

−0.179***

9. Dual

0.274

0.446

0.000

−0.094***

0.050***

−0.230***

−0.129***

0.032***

10. Board

2.128

0.199

2.197

0.055***

−0.083***

0.157***

0.259***

0.013*

11. GDP

0.095

0.322

0.089

0.011

0.025***

0.006

−0.013*

0.009

12. Structure

0.412

0.095

0.440

−0.172***

−0.322***

−0.061***

−0.002

0.010

13. ENV

0.030

0.010

0.028

0.063***

0.254***

0.015**

0.059***

−0.017**

Variables

6

7

8

9

10

11

12

 

7. Growth

0.021***

       

8. Capin

−0.011

−0.078***

      

9. Dual

−0.128***

0.030***

−0.011

     

10. Board

0.153***

−0.029***

−0.025***

−0.179***

    

11. GDP

−0.002

0.008

−0.004

0.022***

−0.003

   

12. Structure

−0.011

−0.037***

−0.095***

0.000

0.030***

0.000

  

13. ENV

0.018***

0.012*

0.038***

−0.001

−0.006

−0.008

−0.482***

 
  1. This table presents descriptive statistics and the correlation matrix of the main variables used in the analysis. All the continuous variables are winsorized at the 1% and 99% levels.
  2. *, **, and *** represent significance at the 10%, 5%, and 1% levels, respectively.
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