A/B Test Design
Statistical experiment design and analysis capabilities for product experimentation
npx skills add a5c-ai/babysitter --skill ab-test-design --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# A/B Test Design Skill ## Overview Specialized skill for statistical experiment design and analysis capabilities. Enables product teams to design rigorous experiments, calculate sample sizes, and interpret results with statistical confidence. ## Capabilities ### Experiment Design - Calculate required sample sizes for experiments - Design experiment variants and hypotheses - Define success metrics and guardrail metrics - Create experiment documentation templates - Design multi-variant tests (A/B/n) - Plan sequential and Bayesian experiments ### Statistical Analysis - Validate statistical significance of results - Calculate practical significance and effect sizes - Detect interaction effects and segments - Perform power analysis - Calculate confidence intervals - Handle multiple comparison corrections ### Decision Support - Recommend ship/iterate/kill decisions - Identify segment-specific impacts - Assess long-term vs short-term effects - Generate experiment reports - Track experiment velocity metrics ## Target Processes This skill integrates with the following processes: - `product-market-fit.js` - Validation experiments for PMF hypotheses - `conversion-funnel-analysis.js` - Funnel
- Overview
- Capabilities
- Experiment Design
- Statistical Analysis
- Decision Support
- Target Processes
- Input Schema
- Output Schema
- Usage Example
- Dependencies
What does the A/B Test Design skill do?
Statistical experiment design and analysis capabilities for product experimentation
How do I install it?
Run `npx skills add a5c-ai/babysitter --skill ab-test-design --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From a5c-ai/babysitter, a repository with 1,642 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.