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作者 hipya 在 PTT [ Statistics ] 看板的留言(推文), 共31則

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[問題] 統計推論相關問題

[ Statistics ]26 留言, 推噓總分: 0

作者: hipya - 發表於 2014/05/29 15:25(10年前)

6^F→hipya:請問所謂二項比例差異之檢定是什麼意思，另外整個檢定程序05/29 17:29

7^F→hipya:和想法有錯嗎?05/29 17:29

12^F→hipya:不好意思能夠再說詳細一些嗎或者是有參考資料或文獻? 感謝05/29 17:37

14^F→hipya:我的理解是我從一個群體抽樣作檢定得到reject H0的比例為05/29 17:49

15^F→hipya:0.1，不reject H0的比例為0.9。然後從兩個群體得到reject H005/29 17:50

16^F→hipya:的數量為40，不reject H0的個數為60，在分別算出期望值05/29 17:51

17^F→hipya:為40*0.1=4, 60*0.6=3.6，再利用這兩期望值算卡方的檢定統計05/29 17:53

18^F→hipya:量，這樣對嗎?05/29 17:53

19^F→hipya:我打錯期望值分別為10與9005/29 18:03

20^F→hipya:觀察值為40與6005/29 18:03

22^F→hipya:如果都是觀察值的話那麼期望值該如何計算?05/29 20:11

[問題] 想請問顯著水準與p值的差別

[ Statistics ]12 留言, 推噓總分: +1

作者: kcc0606 - 發表於 2014/05/27 07:59(10年前)

1^F推hipya:第一個問題我之前來板上請教過你所想得應該沒錯顯著水準05/27 11:56

2^F→hipya:只是自己所設定的標準而p-value是告訴你當顯著水準低於此值05/27 11:57

3^F→hipya:則不可能判定為有差異05/27 11:57

[問題] p-value的準確度?

[ Statistics ]35 留言, 推噓總分: +1

作者: hipya - 發表於 2014/05/16 16:10(10年前)

10^F→hipya:可是p-value會影響到檢定結果? 因為p-value不是最低能拒絕H005/16 17:48

11^F→hipya:的顯著水準嗎? 如果p-value不夠準確不就代表檢定結果也不準05/16 17:48

13^F→hipya:所以檢定的好壞是取決於型一和型二錯誤嗎?05/16 17:53

22^F→hipya:感謝我懂了!! 所以當sample size越大相同顯著下型一和型05/16 18:02

23^F→hipya:二錯誤會降低嗎? 如果會是依據什麼理論呢?05/16 18:03

27^F→hipya:請問條件包含哪些呢? 所以如果我要找出最佳的檢定條件我只05/16 18:08

28^F→hipya:要調整顯著水準以及sample size這兩個變數去找就可以了嗎?05/16 18:09

32^F→hipya:好的感謝你!!05/16 18:21

[問題] K-S test裡面n的條件

[ Statistics ]5 留言, 推噓總分: 0

作者: hipya - 發表於 2014/05/13 13:29(10年前)

5^F→hipya:了解感謝!!05/14 18:21

[問題] 樣本估計母體

[ Statistics ]43 留言, 推噓總分: 0

作者: hipya - 發表於 2014/04/07 11:20(10年前)

7^F→hipya:恩是兩組資料沒錯我是要檢驗有相同的參數04/07 22:19

8^F→hipya:就是在Rayleigh distribution下兩個的參數是否相同04/07 22:21

19^F→hipya:請問如果要檢定是否可以用Rayleigh distribution來描述的話04/08 16:28

20^F→hipya:該怎麼做比較好感謝您04/08 16:28

32^F→hipya:請問作卡方適配度檢定的話假設資料有N筆自由度為N-1嗎?04/08 18:49

33^F→hipya:我看到上面的推文裡有提到自由度為2N，不知道為何是兩倍04/08 20:16

42^F→hipya:我的確是沒有統計的相關知識是因為研究上用到才會來這請教04/08 21:27

43^F→hipya:真的很感謝你這麼熱心的解答幫助了我不少衷心感謝04/08 21:28

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