Noun | 1. | negative correlation - a correlation in which large values of one variable are associated with small values of the other; the correlation coefficient is between 0 and -1 statistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters correlational statistics, correlation - a statistical relation between two or more variables such that systematic changes in the value of one variable are accompanied by systematic changes in the other |