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Legacy statistics methodology - Docs - PostHog

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Note: This document describes methodology used to evaluate experiments created prior to January 2025. Check out our statistics overview for an…

Legacy statistics methodology Contents Bayesian experimentation Funnel experiment calculations 1. Probability of being the best 2. Statistical significance Trend experiment calculations 1. Probability of being the best 2. Statistical significance How does PostHog determine final significance? Note: This document describes methodology used to evaluate experiments created prior to January 2025. Check out our statistics overview for an introduction to our updated methodology. Bayesian experimentation In the field of experimentation, there are two primary statistical approaches: frequentist and Ba

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