The Quick Change Oil Company has a number of outlets in the metropolitan Seattle
ID: 3151620 • Letter: T
Question
The Quick Change Oil Company has a number of outlets in the metropolitan Seattle area. The daily number of oil changes at the Oak Street outlet in the past 20 days are:
65
98
55
62
79
59
51
90
72
56
70
62
66
80
94
79
63
73
71
85
ow many classes would you recommend?
Organize the number of oil changes into a frequency distribution. (Round relative frequency answers to 2 decimal places.)
The Quick Change Oil Company has a number of outlets in the metropolitan Seattle area. The daily number of oil changes at the Oak Street outlet in the past 20 days are:
65
98
55
62
79
59
51
90
72
56
70
62
66
80
94
79
63
73
71
85
The data are to be organized into a frequency distribution
Explanation / Answer
(c)
Minimum value: 51
Maximum value: 98
That is range of values is 98 - 51 = 47
So class width can be (98-51) / 5 = 9.4
That is class width can be 10.
(d)
Following is the frequency distribution:
Interval Frequency (f) Relative frequency =f/20 50 upto 60 4 0.2 60 upto 70 5 0.25 70 upto 80 6 0.3 80 upto 90 2 0.1 90 upto 100 3 0.15 Total 20 1Related Questions
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