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bayes theorem

  1. Hip

    A test for a disease is 99% accurate, and you test positive, so that means you've a 99% change of having the disease, right? No, very wrong!

    A fascinating and easy to follow short video explains Bayes law, as applied to medical tests. It tells a story of going to a doctor because you feel ill, and the doctor thinks you might have a quite rare disease which affects 0.1% of the population. So the doctor orders a blood test that can...