Calculates sample sizes and statistical power for study planning. Applies when someone asks "how many subjects/samples/replicates do I need", wants an a priori power analysis, a minimum detectable effect (MDE), a power curve, or needs to justify a sample size for a grant, IRB protocol, or pre-registration.
Install
npx skills add K-Dense-AI/scientific-agent-skills --skill statistical-powernpx skills add K-Dense-AI/scientific-agent-skills --skill statistical-power -a claude-code -gnpx skills add K-Dense-AI/scientific-agent-skills --skill statistical-power -a codex -ggemini skills install https://github.com/K-Dense-AI/scientific-agent-skills.git --path skills/statistical-powergh skill install K-Dense-AI/scientific-agent-skills statistical-powergit clone --depth 1 https://github.com/K-Dense-AI/scientific-agent-skills /tmp/K-Dense-AI__scientific-agent-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/K-Dense-AI__scientific-agent-skills/skills/statistical-power ~/.claude/skills/statistical-power # Claude Code
cp -R /tmp/K-Dense-AI__scientific-agent-skills/skills/statistical-power ~/.agents/skills/statistical-power # Codex, Cursor, Gemini CLI, Copilot, OpenCode