抽樣方法 - 考試
By Kama
at 2016-01-16T12:50
at 2016-01-16T12:50
Table of Contents
題目:
假設母體含有五個抽樣單位b、c、d、e、f,將其分屬三類如下:
類別 | Ai | 所含的單位
----------------------------
1 | 1 | b
2 | 2 | c,d
3 | 2 | e,f
今以簡單隨機抽樣抽出三個抽樣單位,設ai表示抽出的三個抽樣單位中含有Ai的個數
i=1,2,3。若令p=a1/(a1+a2),試求E(p)及Var(p)?
(出自於黃文隆著《抽樣方法》)
問題:
https://goo.gl/0jqMuH
謝謝
--
假設母體含有五個抽樣單位b、c、d、e、f,將其分屬三類如下:
類別 | Ai | 所含的單位
----------------------------
1 | 1 | b
2 | 2 | c,d
3 | 2 | e,f
今以簡單隨機抽樣抽出三個抽樣單位,設ai表示抽出的三個抽樣單位中含有Ai的個數
i=1,2,3。若令p=a1/(a1+a2),試求E(p)及Var(p)?
(出自於黃文隆著《抽樣方法》)
問題:
https://goo.gl/0jqMuH
謝謝
--
Tags:
考試
All Comments
By Daniel
at 2016-01-20T13:56
at 2016-01-20T13:56
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