計算一下 法老神抽&暴死勸世 - 手遊

By Puput
at 2019-03-31T14:30
at 2019-03-31T14:30
Table of Contents
先來複習簡單統計
n = 抽數
p = 機率
期望值 = n*p
標準差 = sqrt(n*p*(1-p))
法老神抽或勸世暴死可以用抽的結果和期望值差距計算
(出貨數-n*p)/sqrt(n*p*(1-p))
常態分布下
68.27%會在距期望值-1~+1標準差內
95.45%會在距期望值-2~+2標準差內
99.73%會在距期望值-3~+3標準差內
詳細查normal distribution table
==案例一==
60抽術尼祿寶1
(1-60*0.007)/sqrt(60*0.007*0.993) = 0.90
距離期望值+0.90標準差,比81.60%的人歐
==案例二==
9.9單大奧0五星 算550抽
(0-550*0.007)/sqrt(550*0.01*0.99) = -2.36
距離期望值-2.36標準差,比99.09%的人非
真.暴死
==案例三==
25單伯爵寶0 算1391抽
(0-1391*0.007)/sqrt(1391*0.007*0.993) = -3.13
距離期望值-3.13標準差,比99.91%的人非
地獄倒楣鬼
==案例四==
10單術尼祿寶2歪2 算556抽
(2-556*0.007)/sqrt(556*0.007*0.993) = -0.96
距離期望值-0.96標準差,比83.14%的人非
==案例四plus==
同一人
如果和前期成果(320抽11五星)一起計算,共876抽15五星
(15-876*0.01)/sqrt(876*0.99*0.01) = 2.12
距離期望值2.12標準差,比98.30%的人歐
我想這業障還有得消
--
n = 抽數
p = 機率
期望值 = n*p
標準差 = sqrt(n*p*(1-p))
法老神抽或勸世暴死可以用抽的結果和期望值差距計算
(出貨數-n*p)/sqrt(n*p*(1-p))
常態分布下
68.27%會在距期望值-1~+1標準差內
95.45%會在距期望值-2~+2標準差內
99.73%會在距期望值-3~+3標準差內
詳細查normal distribution table
==案例一==
60抽術尼祿寶1
(1-60*0.007)/sqrt(60*0.007*0.993) = 0.90
距離期望值+0.90標準差,比81.60%的人歐
==案例二==
9.9單大奧0五星 算550抽
(0-550*0.007)/sqrt(550*0.01*0.99) = -2.36
距離期望值-2.36標準差,比99.09%的人非
真.暴死
==案例三==
25單伯爵寶0 算1391抽
(0-1391*0.007)/sqrt(1391*0.007*0.993) = -3.13
距離期望值-3.13標準差,比99.91%的人非
地獄倒楣鬼
==案例四==
10單術尼祿寶2歪2 算556抽
(2-556*0.007)/sqrt(556*0.007*0.993) = -0.96
距離期望值-0.96標準差,比83.14%的人非
==案例四plus==
同一人
如果和前期成果(320抽11五星)一起計算,共876抽15五星
(15-876*0.01)/sqrt(876*0.99*0.01) = 2.12
距離期望值2.12標準差,比98.30%的人歐
我想這業障還有得消
--
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