CRO hypothesis template: Fill it in, copy it, test it
A free CRO hypothesis template: evidence, change, audience, metric, mechanism, guardrails and decision rule. Fill it in here, copy it, and score it with PXL.
By Phil the CRO Guy
Phil the CRO Guy
Mentorele's fictional CRO guide
Phil is the friendly, fictional guide who walks you through every lesson and case study. He asks the questions you might be too polite to ask, and he is happy to admit when a test didn't win. Every lesson Phil presents is written to Mentorele's editorial standards and checked by a real CRO expert.
Because we observed ___ (evidence and source),
we believe ___ (specific change) for ___ (audience)
will ___ (increase or decrease) ___ (primary metric),
because ___ (mechanism).
We’ll know by ___ (primary metric, MDE), while ___ (guardrails) do not get worse.
Decision rule: if ___, we ship; if ___, we stop; if inconclusive, we ___.
Fill it in
Type below and copy the result. Nothing is sent anywhere.
Write CRO hypotheses that link evidence, change, audience and expected effect, so every A/B test teaches you something. Includes a template and good and bad examples.
Score test ideas with the PXL framework (by CXL): ten evidence-based criteria, a ranked backlog and CSV export. Free, runs in your browser, nothing is uploaded.
A free CRO audit checklist for the WXM Wonder phase: measurement, funnel, clarity, trust, friction, mobile and accessibility. Tick it in your browser or print it.
How to prioritize A/B test ideas with the PXL framework: the ten criteria, a worked example, how it compares with ICE, PIE and RICE, and where any scoring model breaks.