Sebastian observed the number of minutes his dormmates spent on social media sites while they were at the library. He reported his data in the following list.
\qquad 13,0 , 14 , 36, 18, 913,0,14,36,18,913, comma, 0, comma, 14, comma, 36, comma, 18, comma, 9
Find the mean absolute deviation (MAD) of the data set.
minutes