Data Set 3-1 - CD A student was interested in the structure of the families in the U.S. He sampled 29 of his 330 classmates asking the question, "How many children are there in your family?" He compiled the answers into a simple frequency distribution:
$$\begin{array} { l r }
X & f \
\hline 7 & 1 \
5 & 2 \
4 & 3 \
3 & 6 \
2 & 10 \
1 & 7
\end{array}$$
-Refer to Data Set 3-1. A mean calculated for these data should be symbolized
A) $\mu$
B) $\overline { \mathrm { X } }$
C) either $\mu$ or $\overline { \mathrm { X } }$
D) neither $\mu$ nor $\overline { \mathrm { X } }$

Question

Data Set 3-1 - CD A student was interested in the structure of the families in the U.S. He sampled 29 of his 330 classmates asking the question, "How many children are there in your family?" He compiled the answers into a simple frequency distribution:
 $$\begin{array} { l r } 
X & f \
\hline 7 & 1 \
5 & 2 \
4 & 3 \
3 & 6 \
2 & 10 \
1 & 7
\end{array}$$
-Refer to Data Set 3-1. A mean calculated for these data should be symbolized
A) $\mu$
B) $\overline { \mathrm { X } }$
C) either $\mu$ or $\overline { \mathrm { X } }$
D) neither $\mu$ nor $\overline { \mathrm { X } }$

Quizplus · Accepted Answer

The mean calculated from a sample should be symbolized as $\overline { \mathrm { X } }$, which represents the sample mean.

Data Set 3-1 - CD a Student Was Interested in the Structure