Decision Walk: From Feature Idea To Valid Test
Sequence the decisions that turn a product idea into a valid A/B test plan.
Launch review The team is about to approve an A/B test for an invite modal across 70,000 eligible workspaces. Every shortcut before launch becomes ambiguity after the readout. Framework Hypothesis -> Metric -> Sample Size -> Stopping Rule The order matters because each step constrains the next. You cannot size a test until the metric and MDE are known, and you cannot interpret significance if the stopping rule changes mid-run. Shortcut Launch the modal and watch dashboards The readout answers the question the team actually launched. Statistical significance is interpretable only when the test question, sample, and stopping rule were…
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