What is False Positive Rate

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False Positive Rate is the probability that a positive test result will be given when the true value is negative. Let’s look at two examples: a medical test and a classification-based machine learning algorithm. Then let's look at the formula for calculating false positive rate ___________________________________________________
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At the end he misspeaks - he says we are dividing the false positives by the total number of negative RESULTS. What we're actually doing is dividing the false positives by the total ACTUAL NEGATIVE CASES. i.e. out of 100 people who are in reality NOT SICK, how many will be told by this test that they ARE?

mattcool