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[理工] 統計

[ Grad-ProbAsk ]2 留言, 推噓總分: +1

作者: starQJ - 發表於 2022/07/14 17:04(1年前)

1^F推goshfju: 很明顯不是負二項，兩獨立常態分配的二元線性組合，就是07/16 15:21

2^F→goshfju: 二元常態分配07/16 15:21

[理工] 是不是寫相反了？

[ Grad-ProbAsk ]4 留言, 推噓總分: +1

作者: starQJ - 發表於 2022/02/11 19:04(2年前)

1^F推goshfju: https://i.imgur.com/ghPc38o.jpg02/12 07:34

2^F→goshfju: 補習班答案有錯蠻普遍，建議參考就好02/12 07:36

[理工] t分配

[ Grad-ProbAsk ]16 留言, 推噓總分: +3

作者: starQJ - 發表於 2022/02/10 12:47(2年前)

9^F→goshfju: 只要母體服從常態，隨機抽樣，02/12 07:30

10^F→goshfju: （xbar -mu)/ (s/sqrt(n) ) 就是t分配02/12 07:30

11^F→goshfju: 別看奇怪的書/筆記或自己亂想變成奇怪的版本02/12 07:31

[理工] 卡方分配的自由度

[ Grad-ProbAsk ]4 留言, 推噓總分: +1

作者: starQJ - 發表於 2022/02/11 16:36(2年前)

1^F推goshfju: 先有卡方才會有T,(A)明顯用反02/12 07:28

2^F→goshfju: 而且（A)也不明確樣本不會自己變成T分配反正就亂寫的02/12 07:29

3^F→goshfju: 選項02/12 07:29

[理工] Γ(x+1)=xΓ(x) 證明

[ Grad-ProbAsk ]36 留言, 推噓總分: +6

作者: suspect1 - 發表於 2021/02/12 12:58(3年前)

25^F推goshfju: 你考什麼所？數學所就算了，其他所你這樣讀10年也讀不02/23 06:58

26^F→goshfju: 完。02/23 06:58

27^F→goshfju: 就機率or統計學來說，這個式子重要的不是證明，而是應用02/23 06:59

28^F→goshfju: 。02/23 06:59

29^F推goshfju: 若a=b 則b=a 應該只是很基礎的中學甚至小學數學，你硬要02/23 07:01

30^F→goshfju: 膠著其實蠻浪費時間，就準備考試來說，真的會永遠讀不完02/23 07:01

31^F→goshfju: 。02/23 07:01

32^F推goshfju: 推文中微分方程就是很好的例子，一些式子是無法順順過去02/23 07:03

33^F→goshfju: 的，有些固定解法是別人研究多年的結果。02/23 07:03

[理工] 機率 106中正通訊丙

[ Grad-ProbAsk ]5 留言, 推噓總分: +2

作者: ms0313463 - 發表於 2019/09/29 21:59(4年前)

2^F推goshfju: >1 而非 >=1 你才是對的09/30 09:29

3^F→goshfju: 這種混和型的單點可能會有機率,等號不小心用錯,就會算錯09/30 09:29

[教育] 統計多元線性迴歸

[ Grad-ProbAsk ]1 留言, 推噓總分: +1

作者: destroying - 發表於 2019/02/20 23:14(5年前)

1^F推goshfju: 照著題目給的自變項順著寫就好沒有由大排到小這回事02/21 07:52

[教育] [統計]-市北106-心輔

[ Grad-ProbAsk ]3 留言, 推噓總分: +1

作者: a3236852 - 發表於 2018/02/12 13:47(6年前)

1^F推goshfju: 這個叫截尾常態分配至於要寫多少就看配分順便抱怨下統02/13 08:49

2^F→goshfju: 計出名詞解釋真的蠻無聊的02/13 08:49

[教育] [統計]-嘉大105-心輔

[ Grad-ProbAsk ]3 留言, 推噓總分: +2

作者: chieh072 - 發表於 2018/02/01 19:37(6年前)

2^F推goshfju: 母體參數為常數, 你算出來的信賴區間也是定植02/02 00:01

3^F→goshfju: 真的要扯機率就只有包含(100%) 跟不包含(0%) 兩種情形02/02 00:02

[教育] [統計]-竹教105-心輔

[ Grad-ProbAsk ]11 留言, 推噓總分: +4

作者: chieh072 - 發表於 2018/01/30 09:10(6年前)

1^F推goshfju: 你有沒原始題目的連結或截圖01/30 10:35

2^F推goshfju: 從他的表格看起來信賴區間就是（X+-3)01/30 12:32

3^F→goshfju: 至於3怎麼來的就不得而知資訊不足01/30 12:32

4^F→goshfju: 一般是用z_alpha/2 * sqrt( (1+1/n)*S^2 )01/30 12:33

5^F→goshfju: 這題甲就是102-10801/30 12:34

6^F→goshfju: 乙就是88-9401/30 12:34

7^F→goshfju: 不過 2. 就不確定他要啥了01/30 12:35

8^F→goshfju: 感覺上他可能也不知道推論個體跟推論期望值用的信賴區01/30 12:36

9^F→goshfju: 間會不一樣01/30 12:36

10^F推goshfju: 這題本身蠻多瑕疵的不用太在意01/30 12:39

11^F推goshfju: 看起來把 3/z_（alpha/2）就是他要的標準誤了01/30 12:41

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