试来试去都不对，不知道问题何在。数据类型都是数值型没问题，请帮我看看吧！~~~~
.anova age_1 city_rank aw=w_l
invalid syntax
r(198);

. anova age_1 city_rank ,aw=w_l
option aw not allowed
r(198);

. anova age_1 city_rank ,aweight=w_l
option aweight not allowed
r(198);

. anova age_1 city_rank  aweight=w_l
invalid syntax
r(198);