12. A sociologist studying the prevalence of alcohol use among seniors in a particular high school asked 45 of these youth how many drinks they had consumed in the last week. Convert the following frequency distribution of responses (number of drinks) into a grouped frequency distribution containing four class intervals, and (a) determine the size of the class intervals (), (b) indicate the upper and lower limits of each class interval, (c) identify the midpoint of each class interval, (d) find the frequency percentage for each class interval, (e) find the cumulative frequency of each class interval, and (f) find the cumulative percent for each class interval. What can you conclude? Write three statements interpreting the data for d, e, and f. Number of f cf C% drinks 7 5 100 6 88.89 5 68.89 4 11 55.56 3 31.11 2 3 22.22 1 3 15.56 4. 8.89 n = 45
12. A sociologist studying the prevalence of alcohol use among seniors in a particular high school asked 45 of these youth how many drinks they had consumed in the last week. Convert the following frequency distribution of responses (number of drinks) into a grouped frequency distribution containing four class intervals, and (a) determine the size of the class intervals (), (b) indicate the upper and lower limits of each class interval, (c) identify the midpoint of each class interval, (d) find the frequency percentage for each class interval, (e) find the cumulative frequency of each class interval, and (f) find the cumulative percent for each class interval. What can you conclude? Write three statements interpreting the data for d, e, and f. Number of f cf C% drinks 7 5 100 6 88.89 5 68.89 4 11 55.56 3 31.11 2 3 22.22 1 3 15.56 4. 8.89 n = 45
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
Section: Chapter Questions
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![12. A sociologist studying the prevalence of alcohol use among seniors in a particular high
school asked 45 of these youth how many drinks they had consumed in the last week.
Convert the following frequency distribution of responses (number of drinks) into a
grouped frequency distribution containing four class intervals, and (a) determine the
size of the class intervals (), (b) indicate the upper and lower limits of each class
interval, (c) identify the midpoint of each class interval, (d) find the frequency
percentage for each class interval, (e) find the cumulative frequency of each class
interval, and (f) find the cumulative percent for each class interval. What can you
conclude? Write three statements interpreting the data for d, e, and f.
Number of
f
cf
C%
drinks
7
5
100
6
88.89
5
68.89
4
11
55.56
3
31.11
2
3
22.22
1
3
15.56
4.
8.89
n = 45](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F93afb7f6-22b6-4154-bd12-59da899bd5b5%2F488eb2ae-65e0-4474-91a6-16bd1fab4d1d%2Fuff6o0l.png&w=3840&q=75)
Transcribed Image Text:12. A sociologist studying the prevalence of alcohol use among seniors in a particular high
school asked 45 of these youth how many drinks they had consumed in the last week.
Convert the following frequency distribution of responses (number of drinks) into a
grouped frequency distribution containing four class intervals, and (a) determine the
size of the class intervals (), (b) indicate the upper and lower limits of each class
interval, (c) identify the midpoint of each class interval, (d) find the frequency
percentage for each class interval, (e) find the cumulative frequency of each class
interval, and (f) find the cumulative percent for each class interval. What can you
conclude? Write three statements interpreting the data for d, e, and f.
Number of
f
cf
C%
drinks
7
5
100
6
88.89
5
68.89
4
11
55.56
3
31.11
2
3
22.22
1
3
15.56
4.
8.89
n = 45
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