question_answer

The marks obtained by the 12 students in mathematics in first term of the school examination are given as 13, 17, 16, 14, 11, 13, 10, 16, 11, 18, 12, 17. Find the mean deviation of the above data about the mean.

A)  4.10

B)  3.32

C)  2.33

D)  1.55

E)  None of these