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作者 gsuper 在 PTT [ Statistics ] 看板的留言(推文), 共1226則
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收起看板(734)
[問題] 相關和回歸該如何界定 outlier?
[ Statistics ]16 留言, 推噓總分: +5
作者: gsuper - 發表於 2008/06/29 22:29(16年前)
2Fgsuper:刪除outliner是取樣時的一個技術阿 應該是在檢定之前做的事06/30 01:10
3Fgsuper:只要不是先檢定 然後再修改data去改變檢定結果06/30 01:12
4Fgsuper:應該是可以的吧?06/30 01:12
12Fgsuper:所以outlier是不能刪除的嗎? 我查了課本 的確沒有說能刪除06/30 15:01
13Fgsuper:只說要進一步的研究.... I was wrong06/30 15:01
[問題] 請問想找出兩組資料的outlier?
[ Statistics ]2 留言, 推噓總分: 0
作者: starryheart - 發表於 2008/06/29 22:28(16年前)
1Fgsuper:就是 Q1-1.5 IQR , Q3 + 1.5 IQR [IQR=1.5*(Q3-Q1)]06/29 22:37
2Fgsuper:上面那兩個值就是sample data的可接受範圍 超過的一率刪除06/29 22:38
[問題] ANOVA 不等組能做嗎?
[ Statistics ]8 留言, 推噓總分: +1
作者: WNBA - 發表於 2008/06/29 16:20(16年前)
3Fgsuper:樓上是什麼意思阿? 樣本大小不是會被正確的加權嗎?06/29 21:49
4Fgsuper:為什麼樣本很大 就很容易顯著?06/29 21:49
7Fgsuper:喔..原來是 F 不變(理想的取樣) C.V. 下降....06/30 00:39
Re: [問題] 統計誤差的問題 表示的單位
[ Statistics ]4 留言, 推噓總分: +2
作者: flied - 發表於 2008/06/29 15:47(16年前)
1Fgsuper:看完了...總覺得不能信服...跟我所學的完全不一樣06/29 21:55
2Fgsuper:不過純物理的範疇 應該是有很多我不了解的前提存在吧06/29 21:57
4Fgsuper:還有高斯分佈 (normal)06/29 22:20
[問題] 請問不連續的data該如何處理?
[ Statistics ]3 留言, 推噓總分: +1
作者: gsuper - 發表於 2008/06/27 22:06(16年前)
2Fgsuper:不連續的資料可以直接代入 Z t 檢定嗎?06/28 02:09
[問題] 檢定問題?
[ Statistics ]7 留言, 推噓總分: +3
作者: peter111 - 發表於 2008/06/26 22:41(16年前)
1Fgsuper:第二本的a不就說的很清楚了嗎? 第二本的b好像有點問題...06/27 00:01
2Fgsuper:不知道Poisson分佈能不能這樣代 更別提 F 和chi-square了06/27 00:02
[問題] ANOVA的交互作用問題
[ Statistics ]4 留言, 推噓總分: 0
作者: seldom001 - 發表於 2008/06/26 22:12(16年前)
1Fgsuper:簡單來說就是 甲乙丙 v.s ABCD 並非理想中的bivariate06/26 23:53
2Fgsuper:normal distribution 發現非獨立就要往回歸相關去處理06/26 23:54
3Fgsuper:由於兩種變數皆為 non-fixed 作相關測試究竟有"多"互相依賴06/26 23:55
4Fgsuper:有交互作用就是非獨立 代表P(X)*P(Y) 不等於 P(A交集於B)06/27 00:06
Re: [問題] 一題統計問題
[ Statistics ]2 留言, 推噓總分: 0
作者: binchung - 發表於 2008/06/25 00:08(16年前)
1Fgsuper:請問 test 的完整名稱是什麼? 我查了估狗百度雅虎都沒找到06/25 00:14
2Fgsuper:我是用 "Wilcoxson midrank test" 去搜尋...06/25 00:16
Re: [問題] 一題統計問題
[ Statistics ]1 留言, 推噓總分: +1
作者: binchung - 發表於 2008/06/24 23:17(16年前)
1Fgsuper:midrank 跟 sign-rank 不一樣嗎? 我沒學過midrank...06/24 23:26
[問題] 變異數分析處理控制變數?
[ Statistics ]6 留言, 推噓總分: 0
作者: oceantaferia - 發表於 2008/06/24 21:04(16年前)
1Fgsuper:所以你有k組 (不同的圖片數量) 還有2個blocks (男女)06/24 21:10
2Fgsuper:然後你想要把 blocks的影響剔除 問題是這樣嗎?06/24 21:11
3Fgsuper:你的第一句我看不太懂06/24 21:11
4Fgsuper:如果是我說的那樣 Randomized Complete Block Design ANOVA06/24 21:42