Consider the frequency distribution of the scores of 25 examinees on a 50-item test:

$\begin{array}{lc}
\hline \text {Test Score Interval }&\text { Number of Examinees }\
\hline96-100 & 4 \
91-95 & 6 \
86-90 & 8 \
81-85 & 5 \
76-80 & 2 \
\hline
\end{array}$
-The arithmetic mean of the above distribution of scores is
A) 59.5.
B) 88.0.
C) 89.0.
D) 92.5.

Question

Consider the frequency distribution of the scores of 25 examinees on a 50-item test:

$\begin{array}{lc}
\hline \text {Test Score Interval }&\text { Number of Examinees }\
\hline96-100  & 4 \
 91-95 & 6 \
 86-90 & 8 \
81-85 & 5 \
76-80 & 2 \
\hline
\end{array}$
-The arithmetic mean of the above distribution of scores is
A) 59.5.
B) 88.0.
C) 89.0.
D) 92.5.

Quizplus · Accepted Answer

The arithmetic mean is the sum of the values divided by the number of values in a dataset. In this case, the mean can be calculated as (96+91+86+81+76)/5 = 430/5 = 86. Therefore, the correct answer is C) 89.0.

Consider the Frequency Distribution of the Scores of 25 Examinees