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gen age2=age * age 不就可以了
thanks u all,I should generate new variables before running regression model.sorry for can't type in Chinese.
plkiouyhx 发表于 2013-3-5 10:51 sqrt(age)
happynancy327 发表于 2007-1-13 06:46 想用年龄的平方,怎么写呀?age^2?软件报错了,请问应该怎么写啊?谢谢大侠们
woguyi 发表于 2007-1-13 21:35 gen age2=age * age 不就可以了