question_answer

The weights (in kg) of 18 students are: 32, 28, 26, 25, 29, 27, 30, 42, 35, 33, 28, 26, 29, 38, 27, 32, 34, 36. The median of their weight is represented by M. If the weight 42 kg is replaced by 32 kg and weight 38 kg is replaced by 29 kg, and the median of their weights is represented by M? then find the value of M? ? M.

A)  0 kg

B)       -0.5 kg

C)  0.5 kg

D)  1 kg

E)  None of these