변수의 유형 ( ref : ****https://horae.tistory.com/entry/범주형수치형이상형연속형명목형순서형-정리 )
왜하는가? (ref : https://untitled-memo-2019.tistory.com/1)
예시
(ref : https://stickie.tistory.com/54 )
: 독립변수 - > 종속변수
x1age x2edu x3 industry x4 child → y income
robustness
(link : https://jehyunlee.github.io/2020/09/30/Python-DS-34-seaborn_matplotlib/)
(link : http://blog.naver.com/PostView.nhn?blogId=da91love&logNo=220453992909&parentCategoryNo=&categoryNo=55&viewDate=&isShowPopularPosts=true&from=search)
ref : https://en.wikipedia.org/wiki/Hierarchical_clustering