一组面板数据,四个指标,取过去五年的平均值,按照年度-行业样本从小到大平均分为5组,最小的组赋值为0,最大的赋值为4。年份从05年20年,能说一下命令怎么写吗
year Ind Stkcd 无形资产总资产 员工人数营业收入 营业收入增长率 销售费用营业收入
2015 C37 8 .01618557 2.021e-06 3.215999 .05257611
2016 C37 8 .02056618 1.014e-06 .44856855 .06857101
2017 C37 8 .0186982 1.037e-06 .24249685 .06570437
2018 C37 8 .0223504 1.026e-06 .10037577 .09262777
2019 C37 8 .02332256 8.130e-07 .25546469 .09193318
2020 C37 8 .02609809 1.248e-06 -.4045236 .12571501
2005 C30 12 .01445107 2.232e-06 .20051824 .07059898
2006 C30 12 .02167231 2.351e-06 .28217967 .0665546
2007 C30 12 .03477106 1.825e-06 .41887924 .05999977
2008 C30 12 .02967873 2.037e-06 .02039493 .05152396
2009 C30 12 .03592298 1.915e-06 .23534655 .04588124
2010 C30 12 .03057647 1.513e-06 .46690563 .03430248
2011 C30 12 .05977686 1.440e-06 .06802609 .03087094
2012 C30 12 .06483672 1.626e-06 -.15432416 .033573
2013 C30 12 .06189653 1.287e-06 .10571922 .03457484
2014 C30 12 .06193158 1.481e-06 -.08912744 .03772024