初学STATA在聚类稳健做hausman检验时运行总显示invalid syntax,为什么啊?
请各位大侠帮帮忙吧~~
. quietly xtreg endowment township ,re
. scalar theta=e(theta)
. global yandxforhausman endowment township unemployment peasantincome decentralization fiscalburden openness market
. sort id
. foreach x of valist $yandxforhausman{
2. by id:egen mean'x'=mean('x')
3. gen md'x'='x'-mean'x'
4. gen red'x'='x'-theta*mean'x'
5. }
invalid syntax
r(198);



雷达卡




京公网安备 11010802022788号







