Survey Sampling Check

What it is

Checks a sample description for the things that invalidate percentage claims: who was invited, who responded, what the response rate was, and which subgroups are too small to report. The output is a list of claims the data cannot support, which is more useful than a confidence interval on a biased sample.

Install

Clone the repository, then copy the skill folder into your agent's skills directory — ~/.claude/skills/ for Claude Code. Skills are plain files: no build step, no daemon.

npx skills add survey-sampling-check

How to judge it

Read the SKILL.md before you install. A good skill states when it applies, what it must not do, and how to verify the result. A skill that only lists adjectives will change the agent's tone without improving its output — skip those.

Other research skills

• Synthesis Matrix — Build a source-by-question matrix so synthesis keeps its evidence.
• Claim Verification — For each claim in a draft, find the source sentence or mark it unsupported.
• Expert Interview Guide — Write questions that cannot be answered with a yes.