The information below compares the final exam grades for 2 biology classes:
$\begin{array}{|l|l|}
\hline \text { Class } 1&\text { Class } 2\
\hline\
\hline \bar { X }&\bar { X }\
=80.2 & =81.3 \
\hline s=12.1 & s=6.7 \
\hline N=25 & N=23 \
\hline
\end{array}$
What may we conclude? Class 1
A)is more homogeneous.
B)is more heterogeneous.
C)was a better class.
D)had no grade higher than a 90.

Question

Quizplus · Accepted Answer

Class 1 has a larger standard deviation (s=12.1) compared to Class 2 (s=6.7), indicating greater variability in the data. This suggests that Class 1 is more heterogeneous. Since we don't have information on the actual exam scores, we cannot conclude which class was better or if there were any grades above 90.

The Information Below Compares the Final Exam Grades for 2