Econ388

AIRFARE.DES

year origin destin id dist passen fare bmktshr
ldist y98 y99 y00 lfare ldistsq concen lpassen

Obs: 4596

1. year 1997, 1998, 1999, 2000
2. origin flight's origin
3. destin flight's destination
4. id route identifier
5. dist distance, in miles
6. passen avg. passengers per day
7. fare avg. one-way fare, $
8. bmktshr fraction market, biggest carrier
9. ldist log(distance)
10. y98 =1 if year == 1998
11. y99 =1 if year == 1999
12. y00 =1 if year == 2000
13. lfare log(fare)
14. ldistsq ldist^2
15. concen = bmktshr
16. lpassen log(passen) -- Added Variables --
17. LargeShare =1 if bmktshr > 0.75
18. y97 =1 if year == 1997
19. distsq =dist^2