Jim Greiner
As a lawyer, I have to be interested not just in what quantitative principles are true, but also in how to present “truth” to people without quantitative training. To that end, HELP! One of the maddening things about statistics is Simpson’s paradox. The quantitative concept, undoubtedly well-known to most readers of this blog, is that the correlation between two variables can change sign and magnitude, depending on what is conditioned on. That is, Corr(A, B | C) might be positive, while Corr(A, B | C, D) might be negative, while Corr (A, B | C, D, E...
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