Re: [心得] 台版交易所不合邏輯篇
Geometric dist. 的期望值是 E(X)=1/P
你的前題錯了，所以幫你修正一下
因為我不常轉卡，在這先引用你的轉卡機率
首先一個一個傳
0→1 50% E(X)=2(張)
1→2 40% E(X)=2.5(張)
2→3 25% E(X)=4(張)
2+2.5+4=8.5(張)
直傳
0→2 33% E(X)=3 (張)
0→3 12% E(X)=8.33 (張)
因此在不考慮其他條件的情況下
直傳2優於一張一張傳到2
直傳3則率優於一張一張傳到3
至於如果要對傳授/強化成功花費90NP，失敗花75NP去做精算來比較的話
則又是另外一個故事了....
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※ 編輯: redant 來自: 125.229.244.19 (06/17 21:53)
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