The following frequency distribution displays the scores on a math test. Find the class boundaries of scores interval 40-59. $\begin{array}{cc}
\hline \text { Scores } & \text { Number of Students } \
\hline 50-59 & 2 \
60-69 & 4 \
70-79 & 6 \
80-89 & 15 \
90-99 & 5 \
\hline
\end{array}$

A) $49.5,59.5$
B) $50.5,59.5$
C) $49.5,58.5$
D) $50.5,58.5$

Question

The following frequency distribution displays the scores on a math test. Find the class boundaries of scores interval 40-59. $\begin{array}{cc}
\hline \text { Scores } & \text { Number of Students } \
\hline 50-59 & 2 \
60-69 & 4 \
70-79 & 6 \
80-89 & 15 \
90-99 & 5 \
\hline
\end{array}$

A) $49.5,59.5$
B) $50.5,59.5$
C) $49.5,58.5$
D) $50.5,58.5$

Quizplus · Accepted Answer

The class boundaries are found by subtracting 0.5 from the lower limit and adding 0.5 to the upper limit of the class interval. Therefore, for the scores interval 40-59, the class boundaries are 39.5 and 59.5. However, since the interval 40-59 is not explicitly listed in the table, we infer the intended interval is 50-59, making the correct boundaries 49.5 and 59.5.

The Following Frequency Distribution Displays the Scores on a Math