Solution,
Given data=3, 7 , 2 , 4, 7, 5, 7, 1, 8, 8
a.Mode= 7 because it has more frequency in comparison to others.
b.Arranging the data in ascending order:
: 1,2,3,4,5,7,7,7,8,8
N(total number of items)=10
Median=(N+1/2)th item
= (10+1/2)th item
= (11/2)th item
= 5.5th item
Again,
5th item+6th item/2
= 5+7/2
=12/2
= 6
c. summation FX=52
N=10
Mean= summationfx/N
=52/10
=5.2
D. Range= highest score- lowest score
= 8-1
=7
Hope it helps
Good luck on your assignment