Answer:
Mean - "is the average of the numbers: a calculated "central" value of a set of numbers."
1.25 - 1.55 = -0.3 = 0.3
1.5 - 1.55 = -0.05 = 0.05
1 - 1.55 = -0.55 = 0.55
1.25 - 1.55 = -0.3 = 0.3
2 - 1.55 = 0.45
0.75 - 1.55 = -0.8 = 0.8
2.5 - 1.55 = 0.95
1.75 - 1.55 = 0.2
2.5 - 1.55 = 0.95
1 - 1.55 = -0.55 = 0.55
Mean Absolute Deviation:
MAD = 0.51
Explanation: