Consider a two-factor factorial design with three levels in factor A, three levels in factor B, and

Question:

Consider a two-factor factorial design with three levels in factor A, three levels in factor B, and four replicates in each of the nine cells.
a. How many degrees of freedom are there in determining the factor A variation and the factor B variation?
b. How many degrees of freedom are there in determining the interaction variation?
c. How many degrees of freedom are there in determining the random variation?
d. How many degrees of freedom are there in determining the total variation?