In Looking Over All of His Students' Grades on the Last

Multiple Choice

In looking over all of his students' grades on the last test,Dr.Abbot notices that there appears to be many high scores in one of his three classes.To determine if this class did perform better than the other two classes on this same test,Dr.Abbot decides to compute a mean and median for each class.To compare his classes,Dr.Abbot is using

A) inferential statistics.
B) measures of variability.
C) measures of central tendency.
D) frequency distributions.