$$\text { Use the given table to determine the mean, } \mu _ { \chi ^ { \prime } } ^ { - } \text {of the variable } \bar { x } \text { for the given sample size. }$$
-$\begin{array}{c|c}
\text { Sample } & \bar{x} \
\hline 4,5 & 4.5 \
4,6 & 5 \
4,7 & 5.5 \
4,8 & 6 \
5,6 & 5.5 \
5,7 & 6 \
5,8 & 6.5 \
6,7 & 6.5 \
6,8 & 7 \
7,8 & 7.5
\end{array}$
A)$6.5$
B) 7
C) 6
D) $5.5$

Question

Quizplus · Accepted Answer

The mean of the variable $\bar{x}$ is calculated by averaging all the $\bar{x}$ values: $(4.5 + 5 + 5.5 + 6 + 5.5 + 6 + 6.5 + 6.5 + 7 + 7.5) / 10 = 6$.

- A) 6.56.56.5 B) 7 C) 6 D) 5.55.55.5

- A) $6.5$ B) 7
C) 6
D) $5.5$