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by cerebellum
26 Sep 2015, 19:23
Forum: Archive
Topic: Simpson's paradox
Replies: 28
Views: 899
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Simpson's paradox

@kaiserklein: you made a mistake when calculating Pr("you have small stones"). It should be (87+270)/(87+270+263+80). When you do this, you get the correct answer of Pr("A works") ~= .83. As mentioned previously, the paradox arises out of the inappropriate weighting of the subgroups. Also, quoting .....

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