統計學-101年經濟部所屬事業機構新進職員 - 考試
By Kristin
at 2013-12-27T17:41
at 2013-12-27T17:41
Table of Contents
9.有關F分配,自由度為v1、v2,下列何者不正確
(A)E(F)=v2/(v2-2),v2>2
(B)當v2趨近無限大時,E(F)趨近於1
(C)當v1、v2趨近無限大時,F趨近於標準常態分配
(D)F分配為一單峰分配
答案是(C) 我認為是(B)
不過我GOOGLE,是說v1、v2趨近無限大時,F趨近於常態分配(少標準兩字)
而(B)不是應該要v1、v2都趨近於無限大的時候,E(F)才會趨近於1嗎?
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(A)E(F)=v2/(v2-2),v2>2
(B)當v2趨近無限大時,E(F)趨近於1
(C)當v1、v2趨近無限大時,F趨近於標準常態分配
(D)F分配為一單峰分配
答案是(C) 我認為是(B)
不過我GOOGLE,是說v1、v2趨近無限大時,F趨近於常態分配(少標準兩字)
而(B)不是應該要v1、v2都趨近於無限大的時候,E(F)才會趨近於1嗎?
--
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