Find the coefficient of variation for each of the two sets of data, then compare the variation. (The same data were used in Section 3-2.) a) Cost of Flying Listed below are costs (in dollars) of...

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Find the

coefficient of variation for each of the two sets of data, then compare the variation. (The same data were



used in Section 3-2.)



a) Cost of Flying
Listed below are costs (in dollars) of roundtrip flights from JFK airport in New York City to San Francisco. All flights involve one stop and a two-week stay. The airlines are US Air, Continental, Delta, United, American, Alaska, and Northwest.


























30 Days in Advance:



244



260



264



264



278



318



280



1 Day in Advance:



456



614



567



943



628



1088



536



b)
BMI for Miss America
The trend of thinner Miss America winners has generated charges that the contest encourages unhealthy diet habits among young women. Listed below are body mass indexes (BMI) for Miss America winners from two different time periods.
































BMI (from the 1920s


and 1930s):



20.4



21.9



22.1



22.3



20.3



18.8



18.9



19.4



18.4



19.1



BMI (from recent


winners):



19.5



20.3



19.6



20.2



17.8



17.9



19.1



18.8



17.6



16.8



c)
Nicotine in Cigarettes
Listed below are the nicotine amounts (in mg per cigarette) for samples of filtered and non-filtered cigarettes (from Data Set 4 in Appendix B).




































































Non-filtered:



1.1



1.7



1.7



1.1



1.1



1.4



1.1



1.4



1.0



1.2



1.1



1.1



1.1



1.1



1.1



1.8



1.6



1.1



1.2



1.5



1.3



1.1



1.3



1.1



1.1





Filtered:



0.4



1.0



1.2



0.8



0.8



1.0



1.1



1.1



1.1



0.8



0.8



0.8



0.8



1.0



0.2



1.1



1.0



0.8



1.0



0.9



1.1



1.1



0.6



1.3



1.1





d)
Customer Waiting Times
Waiting times (in minutes) of customers at the Jefferson Valley Bank (where all customers enter a single waiting line) and the Bank of Providence (where customers wait in individual lines at three different teller windows) are listed below. Determine whether there is a difference between the two data sets that is not apparent from a comparison of the measures of center. If so, what is it?






























Jefferson Valley (single line):



6.5



6.6



6.7



6.8



7.1



7.3



7.4



7.7



7.7 7.7



Providence (individual lines):



4.2



5.4



5.8



6.2



6.7



7.7



7.7



8.5



9.3 10.0


Answered Same DayDec 24, 2021

Answer To: Find the coefficient of variation for each of the two sets of data, then compare the variation. (The...

Robert answered on Dec 24 2021
123 Votes
a)
b)
c)
d)
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