Appendix Table 2 Spearman Rank Correlation Coefficients

Appendix Table 2 Spearman Rank Correlation Coefficients

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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.