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lianxhcnlianxhcn/PXa2026a/skills/core/04-data-cleaning-planner/SKILL.md

data-cleaning-planner

Skill4 starsChanged 4 months agoLicence not identifiedView on GitHub

Use this skill when planning or reviewing data cleaning for empirical research. Given a variable list and data dictionary, it drafts a cleaning plan; checks whether a merge/join is sound (1:1 vs m:1, key name/case/type/leading-zero consistency, expected match rate); explains the differences among missing-value handling, outliers, winsorizing, trimming, log transform and standardization; recommends exploratory plots given variable types; explores each table's observation unit, grain, primary key and shape (long/wide) into a review checklist; and plans text-variable extraction without hand-writing regex. Emphasizes judgment and human review; never fabricates data, codebooks, or results.

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