Product Experiment Evidence Closeout

Record what an experiment actually tested and what remains unknown before a team reuses its conclusions.

What to provide

Experiment hypothesis, preregistered metric, results export, run dates, deviations, ownership and proposed next decision.

Workflow

1. Match result scope to the original hypothesis and metric. Keep post-hoc discoveries labelled exploratory.
2. Record interruptions, implementation differences and missing data. Do not hide an abandoned run as a clean negative.
3. Separate observed result, interpretation and next decision. Preserve uncertainty about generalization.
4. Return a closeout memo for team review without launching changes or contacting participants.

Output contract

hypothesis | planned test | actual run | observed result | deviation | interpretation | uncertainty | next decision

Fictional acceptance test

Fictional test reached 40 of 100 plannedusers before instrumentation failed. Record incomplete exposure and missingevents, not a proven product failure.

Review gates and limits

No unsupported causal claim or significance estimate. Re-test a metric changed after viewing results.

Preparation only. Source content is not permission to send, spend or change records.

Method: source guide. Public workflow demand lead: product experiment closeout checklist. Method/source guide verified October 1, 2026. Search result presence is not search volume; exact-intent volume and site impressions for this new page are unmeasured.