<!-- PM-Skills | https://github.com/product-on-purpose/pm-skills | Apache 2.0 -- Experiment Design An experiment design document defines all parameters needed to run a rigorous A/B test or controlled experiment. It ensures the team aligns on what you're testing, how you'll measure success, and how long to run the test before drawing conclusions. Good experiment design prevents common pitfalls: underpowered tests, unclear success criteria, and decisions based on noise rather than signal. When to Use - Before launching an A/B test to validate a product change - When testing a hypothesis that re…