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Spearman's rank and Pearson's PMCC
infoWhy this? Spearman's rank correlation and Pearson's product moment correlation coefficient quantify association rather than relying solely on visual impressions. Distinguishing rank-based association from linear correlation helps us interpret each measure appropriately and compare relationships.
scheduleWhy now? Scatter diagrams and estimation have established the meaning and practical significance of correlation. We can now connect these visual and contextual interpretations to numerical coefficients, strengthening our evaluation of relationships.
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