How do I document timer test results?

How do you document timer test results?

A single shared log with a fixed template turns scattered tests into compounding knowledge. Without it, every result evaporates and you pay to relearn the same lessons. Here is the system.

One log, one template, eight fields

Every timer test gets one entry in a shared spreadsheet with the same eight fields: the hypothesis in one sentence, the two versions compared, the audience and traffic split, the start and end dates, the primary metric and each version's result, the sample size, the decision you made, and the date you shipped it. Consistency matters more than sophistication: a log everyone fills the same way gets read, while a beautiful dashboard nobody updates is decoration. The template is the whole system.

Write the decision at the end

A log that captures conclusions early becomes a record of hope. Record the decision after the test closes, when the data is final, and note the reasoning in one line. Next quarter, when someone asks why timers run on product pages but not in the cart, the log answers with evidence instead of memory. Documentation exists to settle debates, and it can only do that if it was written honestly, at the end.

Compare on the metric you defined first

The primary metric must be the one written before the test started, because post-hoc metrics are cherry-picking with extra steps. Compare versions on it, and record margin per order alongside conversion, because a timer that wins on orders by discounting deeper can lose money while winning the test. Two numbers per version, conversion and margin, tell you whether a win is real or just expensive.

Capture the context

Every entry needs its context: what else ran at the same time, what season it was in, any technical notes. Results without context get misread later, and misread results are worse than no results, because they ship confidently wrong conclusions. Three lines of context take minutes to write and prevent hours of misinterpretation, which is the best trade documentation ever offers.

Review monthly for patterns

The log's real value appears across entries, not within one. Review monthly for patterns: if timers consistently win on product pages, if 24-hour windows beat 48-hour ones, if a certain product category responds while another ignores urgency, those patterns are your next optimizations. A single test answers one question; ten documented tests answer the questions you have not asked yet.

Start the log with clean data

Documentation quality depends on input quality. If timer results mix committed buyers with hesitant ones, the log records noise as insight, and every pattern built on it inherits the error.

Frequently asked questions about documenting timer tests

What should a timer test log include?

Hypothesis, versions, audience, dates, primary metric and results, sample size, decision, and ship date, plus a few lines of context.

Where should the log live?

A shared spreadsheet everyone can read and edit. Fancy tools fail when only one person uses them.

How do I compare versions fairly?

Use the metric defined before the test, with sample sizes noted, and record margin alongside conversion.

Why does context matter so much?

Without it, results get misread next quarter, and misread results ship confidently wrong decisions.

How often should I review the log?

Monthly, specifically looking for patterns across tests rather than re-litigating single results.

What is the biggest documentation mistake?

Scattered notes that nobody can find. If the log is not in one place with one template, the knowledge is gone the moment the person who ran the test forgets it.