r= cov(X,Y) / SxSy
_ _
cov(X,Y)=(Xi - X)(Yi - Y) / n-1
WHAT IS THIS~
佢又係計D咩嫁？
PS...X同Y上面係有一橫既. . .
Coefficient of Correlation & Sample Covariance
2007-12-20 3:04 am
回答 (1)
2007-12-29 2:39 am
✔ 最佳答案
Correlation coefficient: The measure of linear association between two variables X and Y.即是兩個variable之間的關係Sample Covariance: 一堆sample入面的variance，即是量度一堆數之間的差異。
.
X同Y上面係有一橫既，即是個mean(平均數)。
參考: 自己
收錄日期: 2021-04-19 00:08:01
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071219000051KK02658