作者查詢 / chrisjon
作者 chrisjon 在 PTT [ Statistics ] 看板的留言(推文), 共446則
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1F推:如果邊際分佈是Uniform的話,那b最有可能錯09/21 18:35
2F推:7.f(x,y)=a,把f(x,y)的範圍畫出來再去積分09/21 18:37
7F推:說真的...題目寫得很清楚,我看得很模糊.....09/21 21:45
11F推:........爆XD09/23 03:48
4F推:Y大兩邊板都會看^^"09/19 23:05
5F→:對了...轉過來沒差09/19 23:07
1F推:Gamma的相加性怎麼證的,那就怎麼證科西09/06 17:06
1F推:Gamma的相加性怎麼證的,那就怎麼證科西09/06 17:06
1F推:1.先算出Poisson每天發生次數的機率08/28 01:26
2F→:然後再用總天數去算0次應該有幾天 1次… 再來算法跟上一08/28 01:27
3F→:題一樣08/28 01:28
4F→:2-1 離散轉連續,先算二項的E(x)和V(x)再轉成N(μ,σ^2)08/28 01:28
5F→:求P(X=90) = P(89.5<X<90.5) By Yate's校正(離散轉連續)08/28 01:29
6F→:2-2 P(X<45)=0.33 P(X>65)=0.1 兩個做標準化後求μσ^208/28 01:30
9F推:請教一下,這題的平均數是360/5嗎?(原po說總天數360)08/28 16:08
1F推:10*X,代表10顆一模一樣的橘子;X+X+X+…+X,代表抽樣十08/24 23:51
2F→:顆不一樣的橘子,平均數學起來一樣,但變異數計算方式會08/24 23:52
3F→:不同08/24 23:53
4F→:平均數"算"起來一樣,打錯字08/24 23:53
1F推:聯合充分,不是一對一,而是兩個統計量 聯合充分 參數1,207/28 00:57
2F→:不知道這樣說對不對07/28 00:58
4F推:(Σ(X_i)^2,ΣX_i)聯合充分(θ_1,θ_2),不是07/28 10:05
5F→:不是Σ(X_i)^2充分 θ_1;ΣX_i充分θ_207/28 10:06
3F推:那請問一下,這種狀況能說 By C.L.T 嗎?07/13 16:22
13F推:y大點觀念後會習慣性做些批評 … 習慣了= ="07/05 08:50
14F→:會不會應該是"概似函數",沒有"最大"兩個字…07/05 08:53
1F推:假設XY都是0,那就是0,假設XY都是1,那就是2 0<Z<206/29 16:29
2F→:我是這樣"看" X,Y為其他的數字時,Z都會介於0與2之間06/29 16:30