Mr. Guyere’s two freshman science classes took a test on Chapter 7. The results are
shown in the table below.

What can be done to make the data overlap more or less?

A. The mean and median have similar values for both classes. This means that
the data overlaps. To make the data overlap less, a constant value needs to
be added or subtracted from all of the observations in one of the classes.

B. The mean and median do not have similar values for either class. This means
that the data does not overlap much. To make the data overlap more, remove
the very low score from fifth period, which will change the measures of central
tendency.

C. The mean and median have similar values for both classes. This means that
the data does not overlap much. To make the data overlap more, remove the
very low score from fifth period, which will change the measures of central
tendency.

D. The mean and median do not have similar values for both classes. This
means that the data overlaps. To make the data overlap less, a constant value
needs to be added or subtracted from all of the observations in one of the
classes.