Math Exam Worksheet With Answer Key - Math 103/gracey Page 20
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22Answer Key
Testname: PRACTICE EXAM 1_FA12
1) C
2) No; no; The frequencies do not increase, reach a maximum, and then decrease.
3) A
4) D
5)
Age
Frequency
25 - 29
3
30-34
3
35-39
6
40-44
4
45-49
5
50-54
3
55-59
5
60-64
5
6) C
7) D
8) The approximate age at the center is 50.
9) The two histograms will have the same shape. They will also have the same scale on the horizontal axis. They will
differ only in the scales on the vertical axis: the histogram will show frequencies on the vertical axis while the relative
frequency histogram will show relative frequencies.
10) There does not appear to be a significant difference.
freq
freq
20
20
18
18
16
16
14
14
12
12
10
10
8
8
6
6
4
4
2
2
weight
weight
5
5
10
10
15
15
20
20
25
25
11) B
12) A
13) B
14) D
15) C
20
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