Recall that 60 randomly selected shoppers have rated a new bottle design for

a popular soft drink. The data arein attachment.

Use these data to work exercises 2.18 and 2.19.

2.18

a

Find the number of classes that should be used to construct a frequency

distribution and histogram for the bottle design ratings.

b

If we round up to the nearest whole rating point, show that we should employ

a class length equal to 3.

c

Define the nonoverlapping classes for a frequency distribution.

d

Tally the number of ratings in each class and develop a frequency

distribution.

e

Draw the frequency histogram for the ratings data, and describe the

distribution shape.