請問一題順序統計量的分配 - 考試
By Olivia
at 2015-05-04T12:55
at 2015-05-04T12:55
Table of Contents
Xi iid U(α,β)
令Y1 = ( X(1)-α ) / (β-α)
Yn = ( X(n)-α ) / (β-α)
(其中X(1),X(n)是順序統計量)
試求Yn-Y1之分配為何?
補習班的講義裡寫這是 Beta( n-1 , 2 ) 分配
但我用變數變換都推導不出這個結果
我的推導過程如下:
http://i.imgur.com/y5bt5oA.jpg
請問我是哪裡寫錯了?
謝謝
--
令Y1 = ( X(1)-α ) / (β-α)
Yn = ( X(n)-α ) / (β-α)
(其中X(1),X(n)是順序統計量)
試求Yn-Y1之分配為何?
補習班的講義裡寫這是 Beta( n-1 , 2 ) 分配
但我用變數變換都推導不出這個結果
我的推導過程如下:
http://i.imgur.com/y5bt5oA.jpg
請問我是哪裡寫錯了?
謝謝
--
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