In a one-factor ANCOVA, suppose the factor has two levels (groups). Scatterplots of the dependent variable (Y) and the covariate (X) are generated (where group 1 is indicated by "•" and group 2 by "o"). Which of the following graphs shows the most desirable situation?

Question

Quizplus · Accepted Answer

Ideally X and Y should be correlated with each other, and the slope should be similar for each group.)

In a One-Factor ANCOVA, Suppose the Factor Has Two Levels