c*******7
发帖数: 2506 | 1 【 以下文字转载自 JobHunting 讨论区 】
发信人: bergman (烤饼男人，不是伯格曼，更不是褒曼), 信区: JobHunting
标 题: A simple problem on correlation coefficient
发信站: BBS 未名空间站 (Thu Jul 14 12:08:48 2011, 美东)
A, B and C are three variables. Suppose we know the correlation coefficient
between A and B is x, and correlation coefficient between B and C is y. I
remember that the correlation coefficient between A and C must be in a
certain range. But I can not find the formula. Can anybody tell me? Thanks. | h******3
发帖数: 190 | 2 是不是可以用下面这个公式： The partial correlation of x and y, with the
effects of z： http://en.wikipedia.org/wiki/Partial_correlation
然后限制这个partial correlation在-1和1之间。
偶是超级菜鸟，同求教高人。
coefficient
【在 c*******7 的大作中提到】
: 【 以下文字转载自 JobHunting 讨论区 】
: 发信人: bergman (烤饼男人，不是伯格曼，更不是褒曼), 信区: JobHunting
: 标 题: A simple problem on correlation coefficient
: 发信站: BBS 未名空间站 (Thu Jul 14 12:08:48 2011, 美东)
: A, B and C are three variables. Suppose we know the correlation coefficient
: between A and B is x, and correlation coefficient between B and C is y. I
: remember that the correlation coefficient between A and C must be in a
: certain range. But I can not find the formula. Can anybody tell me? Thanks.
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