Answer:
4.4.
Step-by-step explanation:
the mean absolute deviation is calculated as follows:
Mean of the numbers = ( 10+15+18+8+4) / 5
= 55/5
= 11.
Differences from the mean:
10-11 =|-1) = 1 (absolute value)
15-11 = 4
18-11 = 7
|8- 11 = |-3| = 3
4 - 11 = |-7| = 7
Adding the differences we get 22 so the MAD is 22/5 = 4.4.
