我想问下孩子的年龄 Aci 为啥减40啊。父母的就没有减,这是为什么呢
困扰了我2个星期,在google和baidu都没有找到解释
告诉我一下吧
老师说有理由的花可以减任意,还有减60的。他没告诉我为啥,就问我为啥这个模型减了40,我不知道啊{:soso_e109:}
•yci isthe log of the child’s observed income
•ypi isthe log of the parent’s observed income
•Aci isthe child’s age minus 40 (and A2 isits square)
•Api isthe parent’s age (and A2 isits square)
•Rci isa vector of regional dummy variables capturing regional variation in prices and wages.