ANSWERS IN ADV. STAT.

b. 5,6,6,6,6,6,6,9,9,12
MD= mean=7.1
17.4 /10= 1 37/50
S^2 = 42.9/(10-1)
=4 23/30
S=2.18
CV= (2.18/7.1)100%
=30.7 %

c. 5,6,6,9,12,12,14,15,57,66
MD=mean=20.2
=165.2/10
=16.52
S^2=4411.56/9
=490.17
S=22.14
CV=22.14/20.2
=1.096