Answer:
4 in
Explanation:
18 + 22 + 15 + 28 + 17 = 100
100 / 5 = 20
So, the mean for the data set: 18, 22, 15, 28, 17 is 20.
18 - 20 = |2|
22 - 20 = |2|
15 - 20 = |5|
28 - 20 = |8|
17 - 20 = |3|
2 + 2 + 5 + 8 + 3 = 20
20 / 5 = 4
So, 4 in is the mean absolute deviation (MAD).
I also took the test.