作者iinlovekimo (iinlovekimo)
看板Statistics
標題Re: [問題] 機率
時間Wed May 24 14:21:07 2006
※ 引述《gleam97 (ha)》之銘言:
: 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
: 請問有人知嗎 謝謝^^
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
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