$$\begin{array}{l}
\text { Given the following frequency distribution, how many pieces of data were less than } 28.5 \text { ? }\
\begin{array} { c c }
\text { Class Boundaries } & \text { Frequencies } \
13.5 - 18.5 & 4 \
18.5 - 23.5 & 9 \
23.5 - 28.5 & 12 \
28.5 - 33.5 & 15 \
33.5 - 38.5 & 17
\end{array}
\end{array}$$
A) 13
B) 12
C) 25
D) 44

Question

$$\begin{array}{l}
\text { Given the following frequency distribution, how many pieces of data were less than } 28.5 \text { ? }\
\begin{array} { c c } 
\text { Class Boundaries } & \text { Frequencies } \
13.5 - 18.5 & 4 \
18.5 - 23.5 & 9 \
23.5 - 28.5 & 12 \
28.5 - 33.5 & 15 \
33.5 - 38.5 & 17
\end{array}
\end{array}$$
A) 13
B) 12
C) 25
D) 44

Quizplus · Accepted Answer

To find how many pieces of data were less than 28.5, we add the frequencies of the classes with upper boundaries less than 28.5: 4 (from 13.5-18.5) + 9 (from 18.5-23.5) + 12 (from 23.5-28.5) = 25.

A) 13 B) 12 C) 25 D) 44

A) 13
B) 12
C) 25
D) 44