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Maths ~4 minBayes’ theorem, base rates, conditional probability
A positive test isn’t a 99% chance
An accurate test says positive. How worried should you be?
Maths · ~4 min · live model
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The idea behind this lab (open after you’ve tried it)
When a condition is rare, false positives from the large healthy group can outnumber the true positives.
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A full quest builds the idea step by step, with checks and a new case to apply it to.

