Question

14 people where chosen at random and their phone bill was recorded.

67.50 81.21 35.48 58.41 91.11 80.15 61.06 54.07 95.93 71.32 84.44 54.79 72.83 77.35

a) find a class width using six classes rounding your answer to one decimal.

b) Create a histogram using the class width you found.

Answer 1

a) find a class width using six classes rounding your answer to one decimal.

Answer:

b) Create a histogram using the class width you found.

The frequency distribution is:

Class Interval	Frequency
35.4 - 45.5	1
45.5 - 55.6	2
55.6 - 65.7	2
65.7 - 75.8	3
75.8 - 85.9	4
85.9 - 96	2