Plan a data analysis before touching the data
Define metrics, comparisons, quality checks and failure conditions before calculating.
Create an analysis plan for [QUESTION] using [AVAILABLE DATA]. Define the decision this analysis supports, unit of analysis, primary metric, comparison groups, time window, exclusions, missing-data checks, likely confounders, and what result would change the decision. Then provide a small validation table and only the minimum calculations required.
HOW TO USE IT
Make it specific.
Include column definitions and how the data was collected. Do not treat correlation as causation or silently discard missing values.
BEFORE YOU TRUST THE OUTPUT
Verify the result.
Check sources, live facts, calculations and sensitive information. A useful prompt improves the process; it does not guarantee a correct answer.