Answer:
Assuming each class is filled to capacity, the average class size is 70.
Step-by-step explanation:
We have to find the weighted average of the number of students.
The weights are the number of classes.
We have that:
One class of 20 students
Eight classes of 60 students.
One class of 80 students.
Four classes of 100 students.
So
[tex]M = \frac{1*20 + 8*60 + 1*80 + 4*100}{14} = 70[/tex]
Assuming each class is filled to capacity, the average class size is 70.