<p>求助,我想做面板数据的分组回归,可是不会写命令了.该怎么写?如果进行gaochengzhang(高成长性组)和低成长性组的分组回归呢? 非常感谢您的帮助指教!</p><p>insheet using jinrongchiguh1a.csv</p><p>save jinrongchiguh1a</p><p>describe           </p><p>iis id</p><p>tis obs</p><p>iis</p><p>tis</p><p>iis,clear</p><p>tsset id obs</p><p>tsset</p><p>xtdes</p><p>xtdes</p><p>summ                </p><p>tabstat grow,statistics(mean)</p><p>gen gaochengzhang=(grow>6.123483)</p><p>gen dumsic = (id>=158) & (id<=322)</p><p>tab obs,gen(dumt)</p><p>drop dumt1</p><p>regress q fir cor psr inr ecr dar size grow sc10 dumt* dumsic<br/> <br/>xtreg q fir cor psr inr ecr dar size grow sc10 dumt* dumsic,fe</p><p>xtreg q fir cor psr inr ecr dar size grow sc10 dumt* dumsic,re</p>