Glossary Term
Pearson Correlation Coefficient
Performance MetricsEN
Definition
A measure of the correlation of two variables X and Y measured on the same object or organism, that is, a measure of the tendency of the variables to increase or decrease together. It is defined as the sum of the products of the standard scores of the two measures divided by the degrees of freedom.
Extended Notes
Source: National Cancer Institute, NCI Thesaurus 26.09d, C65172. NCI definition, reproduced without modification under CC BY 4.0. Source identity and definition checked automatically on 2026-10-20. No individual clinical interpretation or human reviewer is asserted.
Also Known As
Pearson Correlation CoefficientPearson Product-moment Correlation Coefficient