高管任职年限对中国民营矿业企业经营效率的影响研究
郑明贵,吴萍

Research on the Impact of Senior Executives’ Tenure on the Operating Efficiency of Private Mining Enterprises in China
Minggui ZHENG,Ping WU
表1 投入产出变量的统计描述
Table 1 Statistical description of input-output variables(百万元)
变量名称最大值最小值均值标准差
营业总成本39 871.6506.8445 435.4996 578.000
职工薪酬2 572.3671.523291.123394.410
固定资产净额27 272.9207.7053 086.6305 769.935
营业总收入43 646.79010.8625 773.2866 961.491
净利润5 150.042-2 672.407311.175714.076