Data Set 12-7 -In Data Set 12-7, MS_error Is Equal to
A) 2

Multiple Choice

Data Set 12-7: $$\begin{array} { c c c c c } \text { Subjects } & X _ { 1 } & X _ { 2 } & X _ { 3 } & \Sigma \\\hline 1 & 2 & 3 & 7 & 12 \\2 & 3 & 5 & 6 & 14 \\\hline \Sigma & 5 & 8 & 13 & 26\end{array}$$
-In Data Set 12-7, MS_error is equal to

A) 2.33
B) 1.50
C) 1.17