Math Exam Worksheet With Answer Key - Math 103/gracey Page 5
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22SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
8) In a survey, 26 voters were asked their ages. The results are shown below. Construct a
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histogram to represent the data (with 5 classes beginning with a lower class limit of 19.5
and a class width of 10). What is the approximate age at the center?
43 56 28 63 67 66 52 48 37 51 40 60 62
66 45 21 35 49
32 53 61 53 69 31 48 59
9) Suppose that you construct a histogram and a relative frequency histogram corresponding
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to a particular frequency table. In what ways will the two histograms be similar? In what
ways will they differ?
Solve the problem.
10) The frequency table below shows the amount of weight loss during the first month of a diet
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program for both males and females. Compare the results by constructing two frequency
polygons on the same axes, and determine whether there appears to be a significant
difference between the two genders.
Weight (lb)
Frequency (males)
Weight (lb)
Frequency (females)
5-7
2
5-7
4
8-10
9
8-10
3
11-13
18
11-13
19
14-16
13
14-16
5
17-19
4
17-19
15
20-22
1
20-22
1
20
20
18
18
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10
10
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2
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10
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