Experiment and decision sheet
=============================

State the question, choose the evidence in advance and make the next decision visible.

Version 23 October 2026. Allow 20–30 minutes for an initial draft; evidence collection takes longer.

This is a blank working tool. Replace the prompts with your own observations; do not treat an unanswered field as evidence.

Before testing

Question:

Hypothesis:

Current baseline and how it was measured:

Who is included or excluded?

What would change my mind?

Design the test

Smallest test:

Measure and evidence source:

Decision threshold chosen before testing:

Time and spending limits:

Permission, privacy or safety considerations:

Start date and review date:

After testing

What actually happened?

Observed result and sample size:

Missing data or limits:

Alternative explanations:

Did the test follow the original plan?

Record the decision

Continue, change, stop or investigate:

Reason linked to the evidence:

Next action, owner and review date:

What can be shared publicly, and with whose permission?

Source: https://www.waithakandegwa.com/resources/experiment-decision-sheet