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楼主: cjdong
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一个Stanford的MBA和一个UChicago的教授说MBA没用

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11#
发表于 2009-4-19 21:46:00 | 只看该作者
40 years of data is not long enough to have a statistically siginificant analysis even if the effects of MBA education are positive.
12#
 楼主| 发表于 2009-4-19 22:52:00 | 只看该作者
michael哥们学过statistics吗? 你想想多少degree of freedom would yield a statistically significant result?  40 years of date = degree of freedom is 39。if you pass the t-test on a 39 d.f., of course you get statistically significant result.
13#
发表于 2009-4-22 09:56:00 | 只看该作者
以下是引用cjdong在2009-4-19 22:52:00的发言:
michael哥们学过statistics吗? 你想想多少degree of freedom would yield a statistically significant result?  40 years of date = degree of freedom is 39。if you pass the t-test on a 39 d.f., of course you get statistically significant result.

right, but just means statistically significant.

For the sample itself isn't large enough to provide a unbiased estimate.

when i was studing econometrics, some emprical result provided by the textbook said, salary is significant higher for workers received higher education.

That makes no sense as so many college graduates can't find a job with dismal salary.

Ppl should be more cautious when making decisions, and even more cautious when he give advices,

14#
发表于 2009-4-22 23:24:00 | 只看该作者
lz很牛, 读了大半年开始回到原点考虑why MBA了。
15#
 楼主| 发表于 2009-4-23 16:42:00 | 只看该作者
leoleo啊 你傻不傻啊。 你从这个discussion能看到一点跟我自己有关系的话题吗? 你要是捣乱,没什么constructive的贡献,跟楼上的那位一样,哪凉快哪呆着去。被人google michael等人challenge的不行了到着瞎说八道。回你的沙田的宿舍要饭去吧。
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