Check a dataset before analysis
Find missing values, inconsistent formats, duplicates, and questions that could invalidate results.
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Counts cover every published resource in this section. A resource can belong to several fields and platforms.
Find missing values, inconsistent formats, duplicates, and questions that could invalidate results.
Match a chart to the question, data types, and comparison people need to make.
Understand a formula’s inputs, intermediate steps, assumptions, and possible failure cases.
Write a concise performance narrative that separates changes, explanations, and next steps.
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Platform labels describe intended use. Read each resource's author credits, requirements and available access methods.