The Mental Shortcut for Mastering Bayes' Theorem
Struggling with Bayes' Theorem? Here is the no-BS guide to understanding it, complete with real-world examples and study shortcuts.
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Emma Watkins · EdTech Specialist
Are you consistently losing points on Bayes' Theorem because of ignoring the base rate fallacy? If so, you're making the exact same error as 80% of your class.
The Contrast Technique
To build your intuition, contrast a failure against a success.
Failure: ignoring the base rate fallacy.
Success: A test is 90% accurate for a disease affecting 1% of people. If you test positive, you actually only have about an 8% chance of having it..
By comparing the two, the shortcut becomes obvious. You aren't doing less work; you are doing more efficient work.
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