Answer:
Top 5 ; Mean = 8.54 ; MAD = 1.752
BOTTOM 5 : Mean = 0.5047 ; MAD = 0.0034
Explanation:
Given the data :
Top 5 : 11, 9.5, 9.5, 7.9, 4.8
Mean, m = Σx / n ; n = sample size = 5
Mean, m = 42.7 / 5 = 8.54
Mean absolute deviation (MAD) : Σ|x - m| / n ;
(|11-8.54| + |9.5-8.54¦ + ¦9.5-8.54| + |7.9-8.54| + |4.8-8.54|) / 5 = 1.752
Bottom 5 : 0.5, 0.502, 0.5045, 0.507, 0.51
Mean, m = Σx / n ; n = sample size = 5
Mean, m = 2.5235 / 5 = 0.5047
Mean absolute deviation (MAD) : Σ|x - m| / n
The mean absolute deviation :0.0034
