Question

Compute mean deviation about median from the following data:

Height in inches	No. of students
58	15
59	20
60	32
61	35
62	35
63	22
64	20
65	10
66	8

Answer 1

X	f	cf
158	15	15
59	20	35
60	32	67
61	35	102
62	35	137
63	22	159
64	20	179
65	10	189
66	8	197
	N = 197

Mean deviation about median: