What is the number of degrees of freedom associated with the adjusted sum of squares within an ANCOVA with one covariate?
A) J - 1
B) N - J
C) N - 2
D) N - J - 1

Question

Quizplus · Accepted Answer

The adjusted sum of squares within an ANCOVA with one covariate has N - J degrees of freedom, but since there is also one additional factor in the model (the covariate), we need to subtract one from the total degrees of freedom, giving us N - J - 1.

What Is the Number of Degrees of Freedom Associated with the Adjusted