lingvisten

>hypothesis test: return befor and after the same，个人认为是卡方分布。
F-test (chi-square: variance = 0, f-test var1 / var2 = 1)
>compare to continouse uniform distribution,the probability of discrete uniform distribution? A lower B higher c the same 选了C，因离散分布各个取值的概率相同，不知对否。
In a given range, continuous: P(X=c) = 0; discrete: P(X=c) > 0
> 9.cash paid to supplier A.29000 B.32000 C.35000 选了A
COGS: $32000, increase in inventory: $3000, inc a/c payables: $3000 -> $32000 + $3000 (unsold inventory) - $3000 = $32000

有錯請指教

[此贴子已经被作者于2010-6-7 14:20:49编辑过]

lingvisten

QUOTE:

以下是引用jojosmile在2010-6-7 14:20:00的发言：
 好多我都不记得了,记得的也不记得自己的答案了
.不过 :  组合：有一题说两个点都在CML上，且贝塔相同，选ESTIMATED不同。我觉得应该选RETURN 不同,因为横坐标是贝塔,纵坐标是RETURN.

shit... 看錯題，以為是SML