Question

The number of visitors to a museum per hour recorded in one day is 106, 122, 134, 150, 120, 92, 75.
What is the mean absolute deviation for this dataset? Round the answer to the nearest tenth. (1 point)
138.9
19.8
799.0
114.1

Answer 1

First find the mean: (106+122+134+150+120+92+75)/7 = 799/7 ≈ 114.1429.

Absolute deviations: 8.1429, 7.8571, 19.8571, 35.8571, 5.8571, 22.1429, 39.1429.
Sum ≈ 138.8571; divide by 7 → mean absolute deviation ≈ 19.8367 ≈ 19.8.

Answer: 19.8.