Anya recorded the height in inches of 10 students in her class. The results are shown below.
{56, 60, 57, 61, 55, 59, 61, 64, 57, 60}
What is the mean absolute deviation of the data set?
A. 1.1
B. 2.2
C. 22
D. 59
Can someone give me a real answer please?