ab-test-validity-checklist

Overview

This skill produces the pre-flight + post-flight validity checklist for an A/B test. Each item is a gate; failing one without explicit acknowledgment invalidates the experiment.

Per Kohavi et al. Trustworthy Online Controlled Experiments (ISBN 978-1108724265): "More than 50% of experiments in practice are invalidated by issues the checklist catches."

The output: a per-experiment markdown checklist + a sign-off form for the experiment owner.

When to use