Appendix Table 2 Spearman Rank Correlation Coefficients
Appendix Table 2 Spearman Rank Correlation Coefficients
| Years | Labor productivity and profits (OAI) | Labor productivity and profits (OST) | Multifactor productivity and profits (OAI) | Multifactor productivity and profits (OST) |
|---|---|---|---|---|
| 1993-2001 | 0.79 * | 0.53 | ||
| 1994-2001 | 0.83 * | 0.45 | ||
| 1993-2000 | 0.77 * | 0.74 * | ||
| 1994-2000 | 0.78 * | 0.61 |
Key: OAI = Office of Airline Information; OST = Office of the Secretary of Transportation.
Notes: For columns 1 and 3, profit data were obtained from TranStats. For columns 2 and 4, profit data (for Majors) were obtained from Airline Quarterly Financial Review (various issues).
* Significant at the 95 percent level. There is a 5% chance of concluding that a positive or negative association exists when in fact it does not.