R-Square 有什麼不足
為什麼有adjusted R-Square??
thanks
Regression R-Square and adjusted R-Square
2007-04-22 12:47 pm
回答 (1)
2007-04-22 10:36 pm
✔ 最佳答案
R-square不足之處:假設你要加幾個variables, 不論個variable同條regression有無關係, R-square只會上升
但係當你用adjusted R-square嘅時候, 因為會計埋個degree of freedom, 所以知道個variable係唔係relevant.
adjusted R-square = 1- [1-(R-square)]*[(n-1)/(n-k)], where k = no. of parameters estimated
收錄日期: 2021-05-02 17:56:55
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070422000051KK00718