作者iinlovekimo (iinlovekimo)
看板Statistics
标题Re: [问题] 机率
时间Wed May 24 14:21:07 2006
※ 引述《gleam97 (ha)》之铭言：
: 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^^
f(x1)=1/3 ,x1=0
=7/12,x1=1
=1/12,x1=2
f(x2)=1/12 ,x2=0
=5/12,x2=1
=1/2,x2=2
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 140.120.6.209