急问：Beta到底是不是correlation coefficient?

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2^#

发表于 2009-11-23 09:36 | 显示全部帖子

may I know the differences between the two? I checked and found the two formulas are the same.

see the link:

http://en.wikipedia.org/wiki/Correlation_and_dependence

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发表于 2009-11-23 11:02 | 显示全部帖子

beta=Cov (1,2)/(SD1*SD2) isn it?

Anyone can help explain it rather than saying something meaningless? Sorry for saying like this, but to be the honest, I asked some questions and waited from the afternoon, no any usful responese yet...sort of annoyed...

Thanks a lot.

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发表于 2009-11-23 11:03 | 显示全部帖子

as my understanding, beta indicates the sensitive relations between two variables...correct me pls if I'm wrong.

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发表于 2009-11-25 04:02 | 显示全部帖子

明了，多谢多谢！