ab-testing

marketing

ab-testing is a Claude Code skill that helps plan, design, and implement A/B tests and experiments, as well as build a structured growth experimentation program. It activates when the user mentions terms like "A/B test," "split test," "experiment," "variant copy," "multivariate test," or "hypothesis." The skill guides users through hypothesis formulation, sample size selection, metric definition, and test duration planning. Part of the Marketing Skills collection by Corey Haines, it cross-references the copywriting, cro, and analytics skills, and — like all skills in the set — first reads product-marketing to understand product context and audience. Built for growth marketers and product managers who run data-driven experiments to improve conversion and retention.