The Complete Guide to A/B Testing: Sample Size, Duration, and Significance
How to size an A/B test, set the right duration, and judge significance: sample size, MDE, full business cycles, fixed stopping rules, multiple-testing fixes.
Oct 8, 2026
How to size an A/B test, set the right duration, and judge significance: sample size, MDE, full business cycles, fixed stopping rules, multiple-testing fixes.
Build a tagging system in order: unify IDs, layer factual, statistical and model tags with time decay and lifecycle governance, deploy and verify impact.
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Funnel analysis gives a conclusion, not a chart: where and why drop-off happens. Learn 3 funnel decisions, the drill-down to find loss, and 3 common pitfalls.
How to design a membership program? Set the goal first, then structure: points drive behavior, tiers segment users, benefits deliver value, each owning one job.
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