Bayesian AB-test analysis only needs 4 numbers

Show HN: Bayesian AB-test analysis only needs 4 numbers

Bayesian AB-test analysis only needs 4 numbers is active in the show hn launch space.

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Hey (:)You'd be surprised how many of the (quite talented) data analysts I've worked with don't truly understand the beautiful simplicity of Bayesian AB testing.When AB testing, most metrics we care about are binomial (i.e., did or didn't happen -> 1 or 0). Think "User clicked login" or "User upgraded to Premium".This means if you want to build an API for statistically analyzing these experiments all you need as inputs are 4 numbers (per metric): - Control: Total users, and users who "did" - Variant: Total users and users who "did"Then you can reconstruct the "observation array" on the other side of the API, statistically compare your control to your variant, and send the results back!Right

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