http://blog.naver.com/PostView.nhn?blogId=exactmehta&logNo=80095344492
http://harlequinblue.blogspot.com/2011/04/blog-post_23.html
고감자님 블로그 : http://freesearch.pe.kr/page/2
R을 이용한 누구나 하는 통계분석 저자 카페 : http://cafe.daum.net/biometrika
http://people.richland.edu/james/lecture/m170/
http://adnoctum.tistory.com/184
kaist : http://osl7.kaist.ac.kr/books/statistics/ch1.pdf
한남대 : http://wolfpack.hnu.ac.kr/Book/MDA/
