Analysis of Covariance

A statistic that measures differences among group means and uses a statistical technique to equate the groups under study in relation to an important variable.

Analysis of Variance

A statistic that tests whether group means differ from each other, rather than testing each pair of means separately. Considers the variation among all groups.

Categorical Variable

A variable that has mutually exclusive categories but has more than two values. (married, single, partnered)