3. Riley records the number of
homework assignments completed
by randomly selected students in her
school on Monday in the table below.

Grade Assignments Completed
eighth 5,4,5, 4, 4, 5, 4, 5
seventh 6,5,5,5,6,6,5,6
sixth 5,3, 4, 3, 5, 4, 4,4

Make a comparative inference based
on the mean values of each data set.​