The Following Table Shows the Results of an Analysis of Variance

Multiple Choice

The following table shows the results of an analysis of variance comparing three treatment conditions with a sample of n = 7 participants in each treatment.Note that several values are missing in the table.What is the missing value for SS_total?? $$\begin{array} { l c c l l } \text { Source } & \mathrm { SS } & \mathrm { df } & \mathrm { MS } & \\\hline \text { Between } & 20 & \mathrm { xx } & \mathrm { xx } & \mathrm { F } = \mathrm { xx } \\\text { Within } & \mathrm { xx } & \mathrm { xx } & 2 & \\\text { Total } & \mathrm { xx } & \mathrm { xx } & & \\\hline\end{array}$$ ?

A) ?16
B) ?23
C) ?29
D) ?56