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Problem

The following table shows the number of classes that each teacher in the math department at Wilburton High School teaches.
TeacherMr. LinnMrs. RossMr. RileyMs. Moss
Number of classes3742
Find the mean absolute deviation (MAD) of the data set.
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, p, i or 2, slash, 3, space, p, i
classes