Covariance

Covariance means that when two factors have a relationship to each other and one changes, there should be a change seen in the other factor also, either positive or negative. For example, a study shows that a supportive adult figure has a positive relationship or positive Covariance with a child's having good grades in school. Positive Covariance can be shown because when the adult is more supportive, grades go up; when the adult is less supportive, grades go down.