Bureau of Transportation Statistics (BTS)
BTS Home > Publications > Journal of Transportation and Statistics > Volume 3 Number 3 > Paper 5
Printable Version

Table 4
Probability Table for the Three-Staged, Nested Factorial Mixed Effects Model

Source Effect Pr > F
α i YEAR 0.0001
β j DIST 0.0001
χ k CLASS 0.0001
αβ ij YEAR*DIST 0.9986
αχ ik YEAR*CLASS 0.9911
βχ jk DIST*CLASS 0.0001
αβχ ijk YEAR*DIST*CLASS 0.9636
δ (ijk)l STA(YEAR DIST CLASS) —
γ m QRT 0.9054
αγ im YEAR*QRT 0.5219
βγ jm QRT*DIST 0.5505
χγ km QRT*CLASS 0.879
αβγ ijm YEAR*QRT*DIST 0.0024
αχγ ikm YEAR*QRT*CLASS 0.0001
βχγ jkm QRT*DIST*CLASS 0.6947
αβχγ ijkm YEAR*DIST*CLASS*QRT 0.001778
δγ (ijk)lm STA(YEAR DIST CLASS)*QRT —

Note: Please see Appendix for the statistical model used.
Research and Innovative Technology Administration (RITA) • U.S. Department of Transportation (US DOT)
1200 New Jersey Avenue, SE • Washington, DC 20590 • 800-853-1351 • E-mail RITA

Accessibility | Disclaimer | Fast Lane | FedStats | Freedom of Information Act | No FEAR Act | OIG Hotline | Privacy Policy | RSS | USA.gov | White House | Wireless

Plug-ins: PDF Reader | Flash Player | Excel Viewer | PowerPoint Viewer | Word Viewer | WinZip

RITA's privacy policies and procedures do not necessarily apply to external web sites. We suggest contacting these sites directly for information on their data collection and distribution policies.