Journal
CRITICAL CARE
Volume 7, Issue 6, Pages 451-459Publisher
BIOMED CENTRAL LTD
DOI: 10.1186/cc2401
Keywords
coefficient of determination; correlation coefficient; least squares regression line
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The present review introduces methods of analyzing the relationship between two quantitative variables. The calculation and interpretation of the sample product moment correlation coefficient and the linear regression equation are discussed and illustrated. Common misuses of the techniques are considered. Tests and confidence intervals for the population parameters are described, and failures of the underlying assumptions are highlighted.
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