Answer:
4.4
Explanation:
Find the mean of the data set:
Mean = (25 + 28 + 28 + 20 + 22 + 32 + 35 + 34 + 30 + 36) / 10
= 28
Find the absolute deviation for each number by subtracting the mean from each data point:
|25 - 28| = 3
|28 - 28| = 0
|28 - 28| = 0
|20 - 28| = 8
|22 - 28| = 6
|32 - 28| = 4
|35 - 28| = 7
|34 - 28| = 6
|30 - 28| = 2
|36 - 28| = 8
Add up the absolute deviations and divide by the total number of data points:
Mean Absolute Deviation = (3 + 0 + 0 + 8 + 6 + 4 + 7 + 6 + 2 + 8) / 10
= 4.4