7. Gravetter/Wallnau/Forzano, Essentials - Chapter 2- End-of-chapter question 7 The following scores are the ages for a random sample of n = 32 drivers who were issued parking tickets in Chicago during 2015. 57, 30, 45, 59, 39, 53, 28, 19, 34, 21, 34, 38, 52, 29, 64, 39, 22, 44, 46, 26, 56, 20, 33, 58, 32, 25, 48, 22, 51, 26, 63, 51 Determine the best interval width and identify the approximate number of intervals needed for a grouped frequency distribution table. Use an interval width of 5 years, requiring about 10 intervals. Place the ages in a grouped frequency distribution table using the interval width you determined. If there are more rows in the table than you have Intervals, leave blank the bounds and frequency of any unused rows at the bottom. From 15 20 25 30 35 40 45 50 55 60 Through 20 26 30 35 40 45 50 55 60 65 f 1 4 6 6 3 1 3 4 2 From looking at your table, does it appear that tickets are issued equally across age groups? Most of the ages are clustered around 40-44 years old. Ages are clustered near both 20-24 years old and 60-64 years old. O The distribution is fairly even across the age groups
7. Gravetter/Wallnau/Forzano, Essentials - Chapter 2- End-of-chapter question 7 The following scores are the ages for a random sample of n = 32 drivers who were issued parking tickets in Chicago during 2015. 57, 30, 45, 59, 39, 53, 28, 19, 34, 21, 34, 38, 52, 29, 64, 39, 22, 44, 46, 26, 56, 20, 33, 58, 32, 25, 48, 22, 51, 26, 63, 51 Determine the best interval width and identify the approximate number of intervals needed for a grouped frequency distribution table. Use an interval width of 5 years, requiring about 10 intervals. Place the ages in a grouped frequency distribution table using the interval width you determined. If there are more rows in the table than you have Intervals, leave blank the bounds and frequency of any unused rows at the bottom. From 15 20 25 30 35 40 45 50 55 60 Through 20 26 30 35 40 45 50 55 60 65 f 1 4 6 6 3 1 3 4 2 From looking at your table, does it appear that tickets are issued equally across age groups? Most of the ages are clustered around 40-44 years old. Ages are clustered near both 20-24 years old and 60-64 years old. O The distribution is fairly even across the age groups
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Transcribed Image Text:7. Gravetter/Wallnau/Forzano, Essentials - Chapter 2- End-of-chapter question 7
The following scores are the ages for a random sample of n = 32 drivers who were issued parking tickets in Chicago during 2015.
57, 30, 45, 59, 39, 53, 28, 19,
34, 21, 34, 38, 52, 29, 64, 39,
22, 44, 46, 26, 56, 20, 33, 58,
32, 25, 48, 22, 51, 26, 63, 51
Determine the best interval width and identify the approximate number of intervals needed for a grouped frequency distribution table.
Use an interval width of 5
years, requiring about 10 intervals.
Place the ages in a grouped frequency distribution table using the interval width you determined. If there are more rows in the table than you have
Intervals, leave blank the bounds and frequency of any unused rows at the bottom.
From
15
20
25
30
35
40
45
50
55
60
Through
20
26
30
35
40
45
50
55
60
65
f
1
4
6
6
3
1
3
4
2
From looking at your table, does it appear that tickets are issued equally across age groups?
Most of the ages are clustered around 40-44 years old.
O Ages are clustered near both 20-24 years old and 60-64 years old.
The distribution is fairly even across the age groups.
Most of the ages are clustered around 60-64 years old.
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