In the Two-Factor ANOVA Where a Is the Number of Factor

Multiple Choice

In the two-factor ANOVA where a is the number of factor A levels,b is the number of factor B levels,r is the number of replicates,and n is the total number of observations,the number of degrees of freedom for error is:

A) (a − 1) (b − 1)
B) abr − 1
C) r(a − 1) (b − 1)
D) n − ab