Contact us
Choose a category below so we can get back to you as quickly as possible.
由題意知:x=30-(2+4+6+8)=10,方差S2=15[(2-6)2+(4-6)2+(10-6)2+(6-6)2+(8-6)2]=8,故五個數據的標準差是S=S2=22,故選D.
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.