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Foundational reading
These records establish the main concepts, verification boundaries or workflows used elsewhere in this collection.
Methods7 minSource verified
A source-verified guide record for understanding Pearson's product-moment correlation, checking linearity and influential outliers, interpreting direction and magnitude, and reporting association without causal claims.
Methods5 minSource verified
A standards-reference-based equation record for computing RMSE from residuals, explaining why the result is expressed in the target variable's units, comparing model error, and avoiding unsupported claims from a single metric.