Compute the mean absolute deviation for the data in Problem 4.1. The sample mean for this group of values was determined to be $1.21. Problem 4.1 For a sample of 15 students at an elementary school...

Compute the mean absolute deviation for the data in Problem 4.1. The sample mean for this group of values was determined to be $1.21.

Problem 4.1

For a sample of 15 students at an elementary school snack bar, the following sales amounts, arranged in ascending order of magnitude, are observed: $0.10, 0.10, 0.25, 0.25, 0.25, 0.35, 0.40, 0.53, 0.90, 1.25, 1.35, 2.45, 2.71, 3.09, 4.10.