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作者 illreal 在 PTT [ Gossiping ] 看板的留言(推文), 共8304則
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[問卦] 正負3趴不能有白話一點的解釋嗎?
[ Gossiping ]65 留言, 推噓總分: +28
作者: chingming0 - 發表於 2023/11/20 15:54(6月前)
31Fillreal: (柯侯-賴蕭)-(侯柯-賴蕭)的誤差多少111.254.170.38 11/20 16:17
35Fillreal: 假設各變數獨立且誤差固定3%111.254.170.38 11/20 16:17
37Fillreal: 答案就是6%沒有錯111.254.170.38 11/20 16:18
[問卦] 現在組電腦都不裝HDD了嗎?
[ Gossiping ]272 留言, 推噓總分: +109
作者: a516013 - 發表於 2023/11/20 14:36(6月前)
112Fillreal: 塞啦,十幾20t的東西你用SSD裝?111.254.170.38 11/20 15:02
Re: [問卦] 為什麼統計學這種蓋棺論定的事也能吵
[ Gossiping ]48 留言, 推噓總分: +6
作者: billchen123 - 發表於 2023/11/20 14:06(6月前)
18Fillreal: 正確算法要先求[A-C1]-[B-C2]的誤差111.254.170.38 11/20 14:20
20Fillreal: A對C或B對C因為負相關及誤差傳遞誤差會變111.254.170.38 11/20 14:22
22Fillreal: 得相當大,但A對B有正相關能補一些回來111.254.170.38 11/20 14:22
27Fillreal: 就算不考慮相關[A-C1]-[B-C2]的最終誤差111.254.170.38 11/20 14:29
28Fillreal: 都會變成sqrt(4*sigma^2)還真的3%變6%111.254.170.38 11/20 14:30
29Fillreal: 再來就是t=([A-C1]-[B-C2])/6%若>1.96111.254.170.38 11/20 14:31
30Fillreal: 就算是統計上信心95%的顯著差異111.254.170.38 11/20 14:32
31Fillreal: 寫錯,不是除6%,是除一個標準差111.254.170.38 11/20 14:33
32Fillreal: /6 t>1就行了111.254.170.38 11/20 14:34
[問卦] 統計被數學家瞧不起??
[ Gossiping ]30 留言, 推噓總分: +4
作者: Qoo2222 - 發表於 2023/11/20 13:08(6月前)
11Fillreal: 數學家創造公式,統計學只是代公式111.254.170.38 11/20 13:21
[問卦] 統計學專家都說6%合理,鄉民翻車了吧
[ Gossiping ]145 留言, 推噓總分: +29
作者: Push5F - 發表於 2023/11/19 23:18(6月前)
16Fillreal: 柯就說大話沒顯著差異就讓一分。那人家拿111.254.170.38 11/19 23:22
19Fillreal: 一百份無效垃圾問卷不就+100分111.254.170.38 11/19 23:22
31Fillreal: error bar纏在一起就是沒顯著差異111.254.170.38 11/19 23:26
34Fillreal: 事實就是95%信賴區間很難的,一堆研究生111.254.170.38 11/19 23:29
38Fillreal: 真照這標準畢不了業。一個標準差就很好了111.254.170.38 11/19 23:29
58Fillreal: 老闆不懂統計簽沒顯著差異讓分幕僚當然哭111.254.170.38 11/19 23:36
[問卦] 為什麼台灣不流行預製菜?
[ Gossiping ]31 留言, 推噓總分: +7
作者: cchh179 - 發表於 2023/11/19 18:47(6月前)
19Fillreal: 貴又沒比較好吃220.142.86.13 11/19 18:53
Re: [問卦] 統計誤差範圍怎麼算
[ Gossiping ]41 留言, 推噓總分: +4
作者: hawick - 發表於 2023/11/19 13:55(6月前)
15Fillreal: 誤差傳遞啊當然要算兩次220.142.86.13 11/19 14:31
[問卦] 為什麼沒辦法多抽幾份取樣?
[ Gossiping ]17 留言, 推噓總分: +7
作者: b3b4 - 發表於 2023/11/18 23:42(6月前)
4Fillreal: 取十份可以讓到50%,取那麼多做啥220.142.86.13 11/18 23:44
Re: [問卦] 有沒有三方的統計學都超級爛的八卦
[ Gossiping ]32 留言, 推噓總分: +7
作者: swfswf - 發表於 2023/11/18 22:21(6月前)
32Fillreal: 誤差傳遞會變大,3%*sqrt2220.142.86.13 11/18 23:37
Re: [問卦] 有沒有三方的統計學都超級爛的八卦
[ Gossiping ]36 留言, 推噓總分: +13
作者: partsex - 發表於 2023/11/18 23:15(6月前)
14Fillreal: 相減有誤差傳遞,這樣讓更大220.142.86.13 11/18 23:32