빈도분포 표 (frequency table)

data = { 8, 9, 8, 7, 10, 9, 9, 6, 4, 9, 8, 7, 8, 10, 9, 8, 6, 9, 7, 8, 8 }

n = 20
min = ?
max = ?

X	f
10	2
9	5
8	7
7	3
6	2
5	0
4	1