Re: [討論] 買樂透的期望值...
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謝謝tomichy指正
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◆ From: 218.168.72.152
推
02/06 00:00, , 1F
02/06 00:00, 1F
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02/06 00:05, , 2F
02/06 00:05, 2F
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02/06 00:07, , 3F
02/06 00:07, 3F
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02/06 00:10, , 4F
02/06 00:10, 4F
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02/06 00:10, , 5F
02/06 00:10, 5F
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02/06 00:12, , 6F
02/06 00:12, 6F
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02/06 00:13, , 7F
02/06 00:13, 7F
抱歉表達不太好 可以想成是因為本來就有一些錢要充公(45%)
如果上一期留下來的錢 比這一期充公的錢還要多
那期望值就是正的了 反之就是負的
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02/06 00:17, , 8F
02/06 00:17, 8F
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02/06 00:17, , 9F
02/06 00:17, 9F
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02/06 00:18, , 10F
02/06 00:18, 10F
可以說邊際效用會越買越低
當太多人買的時候 這一期充公的錢會太多 導致上一期留下來的獎金不足以彌補
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02/06 00:19, , 11F
02/06 00:19, 11F
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02/06 00:20, , 12F
02/06 00:20, 12F
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02/06 00:23, , 13F
02/06 00:23, 13F
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02/06 00:24, , 14F
02/06 00:24, 14F
因為不需要考慮...
就算有彩券重複中獎 只要獎金分配完畢 期望值就決定了
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02/06 00:30, , 15F
02/06 00:30, 15F
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02/06 00:30, , 16F
02/06 00:30, 16F
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02/06 00:40, , 17F
02/06 00:40, 17F
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02/06 00:41, , 18F
02/06 00:41, 18F
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02/06 00:43, , 19F
02/06 00:43, 19F
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02/06 00:44, , 20F
02/06 00:44, 20F
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02/06 00:44, , 21F
02/06 00:44, 21F
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02/06 00:44, , 22F
02/06 00:44, 22F
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02/06 00:46, , 23F
02/06 00:46, 23F
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02/06 00:47, , 24F
02/06 00:47, 24F
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02/06 00:47, , 25F
02/06 00:47, 25F
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02/06 00:49, , 26F
02/06 00:49, 26F
我想表達的是期望值-50是負的
也許應該用損益兩平點來表達會好些
另外方便賜教699190800怎麼算的嗎?
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02/06 00:50, , 27F
02/06 00:50, 27F
※ 編輯: willy0324 來自: 218.168.72.152 (02/06 01:24)
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02/06 01:26, , 28F
02/06 01:26, 28F
※ 編輯: willy0324 來自: 218.168.72.152 (02/06 01:33)
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02/06 03:04, , 29F
02/06 03:04, 29F
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02/06 03:05, , 30F
02/06 03:05, 30F
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02/06 03:05, , 31F
02/06 03:05, 31F
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