Stata Programming Essentials from Wisconsin 1 个回复 - 1780 次查看
Ever needed to do the same thing to ten different variables and wished that you didn't have to write it out ten times? If so, then this article is for you. If not, someday you will—so you might as we ...2014-3-16 10:01 - kyleliu1 - 计量经济学与统计软件