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# 4 test result is positive

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Unformatted text preview: the disease. (The test incorrectly showed a negative result.) 6. The baseline rate of a disease is the relative frequency of the disease in the target population. We set up an analysis of false positives and false negatives using a contingency table like this: test result is: positive negative total has disease (# of correct outcomes) (# of false negatives) (#of cases) no disease (# of false positives) (# of correct outcomes) (# of non- cases) total (#who test positive) (# who test negative) (population total) There will be numbers in each of the cells. The population total in the lower right corner will be a hypothetical population whose size we chose. Usually it will be a power of 10. 1. Let’s return to the Thought Question: A certain disease affects 1 in every 1000 people. A test for this disease has a false positive rate of 10% and a false negative rate of 10%. This means that the...
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