[商管] [統計學]-西葛馬問題

看板Grad-ProbAsk作者NiceKitty (想要有個依靠><)時間14年前 (2010/01/14 00:06)推噓1(1推 0噓 0→)

留言1則, 1人參與討論串1/3 (看更多)

不好意思再請教各位大大一題>< Consider n independent trials,each of which results in any of the outcomes i, i=1,2,3 with respective probabilities P1,p2,p3 3 ΣPi=1.Let Ni denote the number of trials that result in outcome i, i=1 and show that Cov(N1,N2). Also explain why it is intuitive that this covariance is negative. -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 58.114.107.8

推

locust0923

01/14 09:45, , 1^F

01/14 09:45, 1^F

‣ 返回看板[ Grad-ProbAsk ] 研究

‣ 更多 NiceKitty 的文章

文章代碼(AID): #1BJUzhJq (Grad-ProbAsk)