First, compute the mean:

Next compute the absolute deviations for each datapoint:
|75-95.555|=20.555
|89-95.555|=6.555
|145-95.555|=49.445
|85-95.555|=10.555
|80-95.555|=15.555
|92-95.555|=3.555
|104-95.555|=8.445
|90-95.555|=5.555
|100-95.555|=4.445
Next we'll take the mean of these deviations:

The mean absolute deviation of your data is 13.8517
Answer:
4527
Step-by-step explanation:
total amount students = 4527+1641
=6168
amount of students who did not win a medal = total - amount who won a medal
= 6168-1641
=4527
I want to say 48 bc if 12 is 25 percent then its 1/4 of the students in the class and 12 times 4 is 48
Answer:
False
Step-by-step explanation:
a p e x learning