A/B Test Traffic Splitting: Statistical Validity at Low Volume
Low-traffic tests fail on peeking and weak MDE budgets, not on sample size alone. Fix the split, pre-commit to an MDE, and use methods that survive monitoring.
Nov 15, 2026
Low-traffic tests fail on peeking and weak MDE budgets, not on sample size alone. Fix the split, pre-commit to an MDE, and use methods that survive monitoring.
MTA and MMM answer different questions. Incrementality tests give the causal anchor, while a metric dictionary and dashboards align both views on one metric.
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