Math Exam Worksheet With Answer Key - Math 103/gracey Page 14
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22MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Find the mean for the given sample data. Unless indicated otherwise, round your answer to one more decimal place
than is present in the original data values.
24) The weights (in pounds) of six dogs are listed below. Find the mean weight.
24)
13 21 75 21 134 60
A) 54 lb
B) 53.5 lb
C) 64.8 lb
D) 54.5 lb
Find the median for the given sample data.
25) The ages (in years) of the eight passengers on a bus are listed below.
25)
6 4 25 19 26 49 36 33
Find the median age.
A) 25 yr
B) 25.5 yr
C) 26 yr
D) 24.5 yr
Find the mode(s) for the given sample data.
26) 77 52 32 52 29 77
26)
A) 77
B) 53.2
C) 52
D) 77, 52
Find the midrange for the given sample data.
27) A meteorologist records the number of clear days in a given year in each of 21 different U.S. cities.
27)
The results are shown below. Find the midrange.
72 143 52 84 100 98 101
120
99 121 86
60 59
71
125 130 104 74
83 55 169
A) 112 days
B) 110.5 days
C) 98 days
D) 117 days
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Find the mean and median for each of the two samples, then compare the two sets of results.
28) A comparison is made between summer electric bills of those who have central air and
28)
those who have window units.
May June July Aug Sept
Central $32
$64 $80 $90
$65
Window $15
$84 $99 $120 $40
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Find the mean of the data summarized in the given frequency distribution.
29) A company had 80 employees whose salaries are summarized in the frequency distribution below.
29)
Find the mean salary.
Salary ($) Employees
5,001-10,000
16
10,001-15,000
14
15,001-20,000
15
20,001-25,000
17
25,001-30,000
18
A) $16,143.75
B) $17,500
C) $17,937.50
D) $19,731.25
14
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