$$\begin{array} { l }
\text { A vending machine company wants to check three of its machines to determine if they are properly dispensing 12 ounces of cofee . The data are given below . } \

\end{array}$$

$\begin{array}{ccc}
\hline \text { Machime A } & \text { Machune B } & \text { Machúe } \mathrm{C} \
\hline 11.8 & 11.7 & 12.2 \
12.1 & 11.9 & 12.1 \
12.0 & 11.7 & 12.0 \
11.9 & 11.8 & 11.9 \
12.1 & 120 & 12.2 \
\hline
\end{array}$
-What is the grand mean for the data given above?
A) 12.08
B) 11.96
C) 11.82
D) 11.85

Question

$$\begin{array} { l } 
\text { A vending machine company wants to check three of its machines to determine if they are properly dispensing 12 ounces of cofee . The data are given below . } \

\end{array}$$

$\begin{array}{ccc}
\hline \text { Machime A } & \text { Machune B } & \text { Machúe } \mathrm{C} \
\hline 11.8 & 11.7 & 12.2 \
12.1 & 11.9 & 12.1 \
12.0 & 11.7 & 12.0 \
11.9 & 11.8 & 11.9 \
12.1 & 120 & 12.2 \
\hline
\end{array}$
-What is the grand mean for the data given above?
A) 12.08
B) 11.96
C) 11.82
D) 11.85

Quizplus · Accepted Answer

The grand mean is calculated by averaging all the values from all machines: (11.8 + 12.1 + 12.0 + 11.9 + 12.1 + 11.7 + 11.9 + 11.7 + 11.8 + 12.0 + 12.2 + 12.1 + 12.0 + 11.9 + 12.2) / 15 = 11.96.

-What Is the Grand Mean for the Data Given Above