The two variables are covarying.

The covariants of the equation are calculated using a specific algorithm.

The researchers analyzed the relationship between the dependent variable and several covariables.

The covariable in the study was age.

The covariable factor significantly affects the outcome of the experiment.

The study found strong covariations between smoking and lung cancer.

The researchers conducted a covariational analysis to examine the relationship between the two variables.

The covariability between the two variables is high.

The covariated variables were included in the regression analysis.

The covariabilities of the variables were analyzed in the study.