A MS is obtained in a one-factor between-subjects analysis of variance by.
A) $s ^ { 2 } \div N$
B) $s ^ { 2 } \div d f$
C) $S S \div N$
D) $S S \div d f$

Question

A MS is obtained in a one-factor between-subjects analysis of variance by. 
A) $s ^ { 2 } \div N$
B) $s ^ { 2 } \div d f$
C) $S S \div N$
D) $S S \div d f$

Quizplus · Accepted Answer

MS (mean square) is obtained by dividing the sum of squares (SS) by the degrees of freedom (df). In a one-factor between-subjects ANOVA, there is only one factor, and the MS is obtained by dividing the sum of squares between groups (SSB) by the degrees of freedom between groups (dfB). Therefore, the correct formula is MS = SSB/dfB, which is equivalent to SS/dfB. Hence, the best choice is D, SS divided by df.

A MS Is Obtained in a One-Factor Between-Subjects Analysis of Variance