Last month, the seventh grade and eighth grade math classes at moore middle school collected canned goods for the local food shelter. the dot plots below show the number of canned goods collected by the classes.
the mean absolute deviation for each grade level is 1.6. the difference between the mean number of canned goods collected by each grade level is how many times the mean absolute deviation?
a. 5
b. 4
c. 3
d. 6