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A/B Test Results Write-Up Template (Free)

Updated December 2026
8 min read
TL;DR

Document every test with this template: experiment name, hypothesis, results summary, key metrics, segment analysis, learnings, and next steps. This builds institutional knowledge and helps your team learn what works. Even failed tests are valuable—document them.

Why Document Results?

Build knowledge

Learn what works for your specific audience

Avoid repeating tests

Don't test the same thing twice

Share learnings

Help other teams learn from your experiments

Improve hypotheses

Compare predictions to reality, get better over time

The Template

Experiment Name & Date

What you tested and when

Hypothesis

What you expected to happen and why

Results Summary

Winner, uplift %, statistical significance

Key Metrics

Primary and secondary metrics with confidence intervals

Segment Analysis

Did results differ by device, traffic source, etc?

Learnings

What did you learn? Why did it win/lose?

Next Steps

Implement winner? Run follow-up test?

Screenshots

Visual record of variants tested

Example Write-Up

Experiment: Homepage Headline Test

Ran: Nov 1-21, 2024

Hypothesis

If we emphasize "no-code" in the headline, conversion rate will increase 10% because our audience is non-technical marketers.

Results

Winner: Variant B (+12.3% uplift, p=0.032)

Learnings

Hypothesis confirmed. "No-code" resonates strongly. Effect was stronger on mobile (+15%) than desktop (+9%). Next: test "no-code" messaging on pricing page.

Download Template

Document Your Tests

Use this template for every experiment. Build a knowledge base of what works for your business.

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