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Change in variability
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Ridership on Amtrak's Northeast Corridor line tends to increase with gas prices. ... Because most of Amtrak's trains are electric, their ticket prices are largely ... – PowerPoint PPT presentation
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Title: Change in variability
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Change in variability
Bill Diplas, source www.fedstats.gov
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Change in variability
Bill Diplas, source www.fedstats.gov
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Counterintuitive relation
PAUL STEGALL, source Asking friends
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Counterintuitive relation
PAUL STEGALL, source Asking friends
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Counterintuitive relation
Brian Ejsmont, source http//hybridcars.about.com
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Counterintuitive relation
Brian Ejsmont, source http//hybridcars.about.com
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Intuitive relation
Gas Price vs. Amtrak NEC Ridership
14.5
14
13.5
13
12.5
Amtrak NEC Ridership (millions)
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11.5
11
10.5
1.200
1.300
1.400
1.500
1.600
1.700
1.800
1.900
2.000
Average Gas Price (/gal)
Ben Pressman, sourcewww.narprail.org and
www.bls.gov
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Intuitive relation
Ben Pressman, sourcewww.narprail.org and
www.bls.gov
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Multiple sources of variability
George Karikas, source Road Test Summary of the
November 2006 edition of Road and Track Magazine.
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Multiple sources of variability
George Karikas, source Road Test Summary of the
November 2006 edition of Road and Track Magazine.
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Limiting behavior
Kelly Dyer, source www.collegeboard.com
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Limiting behavior
Kelly Dyer, source www.collegeboard.com
