homoscedasticity UK /həʊməʊskɪdæsˈtɪsɪti/US /hoʊmoʊsɪdæsˈtɪsɪti/ noun1 •A property of a set of random variables such that each variable has the same finite variance.Before analysis, homoscedasticities of sample variances were assessed by Cochran's C and Bartlett's Box tests. — 1989 formshomoscedasticities