measure of association measure of correlation Expert Working Group Agreement: 2022-11-16 vote 5-0 by Brian S. Alper, Philippe Rocca-Serra, Harold Lehman, Jesus Lopez-Alcalde, Eric Harvey Brian S. Alper, Joanne Dehnbostel, Muhammad Afzal, Yuan Gao, Kenneth Wilkins, Harold Lehmann COKA group correlation measure of correlation is a measure of association between ordinal or continuous variables. A value of 0 means no association. A positive value means a positive association (as one variable increases, the other variable increases). A negative value means a negative association (as one variable increases, the other variable decreases). For correlation coefficients, the possible values range from +1 (perfect positive association) to -1 (perfect negative association)