引用:
原帖由 futfuk 於 2009-3-10 04:47 AM 發表
chef believes the expected retention rate is an imaginary number (-i) distributed normally with 95% confidence interval given by a function of unknown various factors.
don't throw school bag la
i hate statistics most....
and i would love to know how to calculate probability of an imaginary number.... is it your Nobel prize theory
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本帖最後由 macy18 於 2009-3-10 09:14 AM 編輯 ]