https://www.youkuaiyun.com/article/2014-06-06/2820111-100-Interesting-Data-Sets-for-Statistics/2 https://blog.youkuaiyun.com/YEJIANSHENG123/article/details/31392525 UCI https://blog.youkuaiyun.com/dcxhun3/article/details/51647753 https://data.world/datasets/regression