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wiki/concepts/A-B-Testing.md

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+---
+title: "A/B Testing"
+type: concept
+tags: [experimentation, testing, statistics]
+sources: [project-management-experiment-tracker]
+last_updated: 2026-04-20
+---
+
+## Definition
+A/B Testing is a controlled experiment that compares a control variant against one or more treatments to measure causal impact on a target metric.
+
+## Core Principles
+- Randomly assign users to variants
+- Change one meaningful variable at a time when possible
+- Predefine primary and guardrail metrics
+- Run long enough to reach adequate sample size
+- Analyze results with statistical rigor
+
+## Related Entities
+- [[Experiment Tracker]]
+- [[Senior Project Manager]]
+