Table summarized frequency of seatbelt use while driving for twelfth-grade participants in the 2003 Youth Risk Behavior Surveillance System (YRBSS) survey. In 2001, YRBSS survey students were asked the same question. For the 2001 survey, a summary of responses given by 2530 students in the twelfth grade who said that they drive follows.
|
Wears Seatbelt
|
Frequency
|
|
Never
|
105
|
|
Rarely
|
248
|
|
Sometimes
|
286
|
|
Most times
|
464
|
|
Always
|
1427
|
a. What percent of the twelfth-grade students who drive said that they always wear a seatbelt when driving?
b. What percent of the twelfth-grade students who drive said that they do not always wear a seatbelt when they drive?
c. Find the percentage in each of the five response categories.
d. Draw a bar graph of the percentages found in part (c).
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Table : Seatbelt Use by Twelfth -Graders When Driving
|
|
Response
|
Count
|
Percent
|
|
Always
|
1686
|
55.40%
|
|
Most times
|
578
|
19.00%
|
|
Sometimes
|
414
|
13.60%
|
|
Rarely
|
249
|
8.20%
|
|
Never
|
115
|
3.80%
|
|
Total
|
3042
|
100%
|