Yule’s Q

a measure of the strength of the relationship between two dichotomous variables, such as a person’s sex (male or female) and graduation from college (yes or no). It ranges from −1 to +1, with values close to either negative or positive 1 indicating a very strong relation and values around 0 indicating little to no relation. Also called Yule’s coefficient of association. [George Udny Yule (1871–1951), British statistician]

Browse dictionary by letter

a b c d e f g h i j k l m n o p q r s t u v w x y z

Psychology term of the day

January 2nd 2025

rank biserial correlation coefficient

an index of association between a dichotomous variable and an ordinal variable. Its interpretation is the same as for other standardized measures of association. For example, a researcher might relate experimental condition (experimental vs. control group) to an ordinal measure of task performance. Compare point biserial correlation coefficient. See biserial correlation coefficient.