A covariate was measured along with the responses in a completely randomized design with a single factor having 7 levels. The p-value from the ANCOVA reveals significant evidence that the slopes of the 7 treatment lines are dierent. A comparison of the 7 treatments A covariate was measured along with the responses in a completely randomized design with a single factor having 7 levels. The p-value from the ANCOVA reveals significant evidence that the slopes of the 7 treatment lines are different. A comparison of the 7 treatments 1. could be made on the unadjusted treatment means 2. could be made on the adjusted treatment means only at average value of the covariate 3. could be made on the adjusted treatment means at specified values of the covariate 4. could be made on the unadjusted treatment means at specified values of the covariate 5. cannot be conducted because there is an interaction between the covariate and treatment which violates the conditions for analysis of covariance