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作者 koming 在 PTT [ Statistics ] 看板的留言(推文), 共16則
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1F推:感謝您的解說~~明天試試看~~謝謝07/01 23:47
3F推:1*(.2+.1)+2*(.1+.1)+3*(.2+.3)04/07 12:30
2F推:交大也考過...03/19 16:06
3F推:直接用jacobian列出來還蠻簡單的吧....02/20 20:04
1F→:剛剛積錯@@02/12 21:23
6F推:直接畫圖即可觀察範圍求解02/12 21:04
1F推:第一題求P(X_1+X_3-X_2 < 0) X_1+X_3-X_2~N(-2,4.25)02/12 20:08
2F→:標準化查表~~02/12 20:11
4F推:第二題重點在E(Xi)=μ V(Xi)=σ^202/12 20:14
5F→:第一堂下課時間+走去教室時間<第二堂開始時間02/12 20:17
1F推:Hogg的INTRODUCTION TO MATHEMATICAL STATISTICS就有了02/05 10:53
1F推:用動差去證~~02/01 18:53
6F推:the ratio of Y to X====>Y/X吧純粹敘述01/21 00:01
7F推:清大那題~~E(S_N)=E(N)E(X)=(np)(μ)01/21 00:06
12F推:答案應該是YES,X獨立Y->X和Yrange to be a rectangular01/21 10:17