作者gleam97 (ha)
看板Statistics
标题[问题] 机率
时间Wed May 24 13:30:52 2006
Let x1 and x2 have the joint probability described as bellow.Please
find f(x1),f(x2)
(x1,x2) (0,0) (0,1) (0,2) (1,1) (1,2) (2,2)
f(x1,x2) 1/12 2/12 1/12 3/12 4/12 1/12
请问有人知吗 谢谢^^
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1F：推 xu3jp68:f(x1)=sumf(x1,x2) all x2=0,1,2 课本一定有写... 05/24 13:37
2F：推 mangogogo:这是定义吧 把课本看熟一点有很多问题都可以解 05/24 17:24