R tutorial

http://www.clemson.edu/economics/faculty/wilson/R-tutorial/Introduction.html

https://www.youtube.com/watch?v=cX532N_XLIs&list=PLqzoL9-eJTNBDdKgJgJzaQcY6OXmsXAHU

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原文地址：https://www.cnblogs.com/zyip/p/4440445.html