Answer:
mad, 2.8.
Explanation:
Mean: 5 + 9 + 1 + 1 + 3 + 8 = 27/6 = 4.5
4.5 - 5 = 0.5
4.5 - 9 = 4.5
4.5 - 1 = 3.5
4.5 - 3 = 1.5
4.5 - 8 = 3.5
(MAD): 0.5 + 4.5 + 3.5 + 3.5 + 1.5 + 3.5 = 17/6 = 2.8
6.5m questions
8.6m answers