Skip to Search Skip to Left Navigation U.S. Department of Transportation (US DOT) Research and Innovative Technology Administration (RITA) Bureau of Transportation Statistics (BTS)Bureau of Transportation Statistics (BTS) - Research and Innovative Technology Administration (RITA) - United States Department of Transportation (USDOT, US DOT or DOT)
  ABOUT RITA | CONTACT US | PRESS ROOM | CAREERS | SITE MAP
Bureau of Transportation Statistics
Data and Statistics
Bookstore
Programs
About BTS
Upcoming Press Releases
External Links
Intelligent Transportation Systems
National Transportation Library
Research, Development and Technology
Transportation Safety Institute
University Transportation Centers
Volpe National Transportation Systems Center
Printable Version

Table 2 - Univariate Analysis of Model 1

Excel | CSV

Explanatory variables Estimates Standard errors Degrees of freedom Scaled deviance t-statistics Sig. at 0.05
Constant -9.2260 0.3480 49 49 -26.55 Yes
QNMm 0.9835 0.0334     29.42 Yes
Constant -1.2210 0.2160 49 49 -5.64 Yes
QNMn 0.2490 0.0243     10.26 Yes
Constant -0.7520 0.2580 49 49 -2.92 Yes
QMm 0.1943 0.0288     6.76 Yes
Constant -2.0910 0.3790 49 49 -5.51 Yes
QMn 0.3877 0.0478     8.12 Yes
Constant 0.8636 0.0748 49 49 11.54 Yes
QPED 0.0357 0.0237     1.51 No
Constant -3.6760 0.1090 49 49 -33.63 Yes
SPEED 0.0771 0.0018     42.83 Yes
Constant 3.2900 1.1800 49 49 2.79 Yes
LWm -0.6510 0.3290     -1.98 Yes
Constant 3.0200 1.0500 49 49 2.88 Yes
LWn -0.5800 0.2950     -1.97 Yes
Constant 1.1960 0.1260 49 49 9.47 Yes
LNm -0.1023 0.0519     -1.97 Yes
Constant 1.0780 0.1200 49 49 8.97 Yes
LNn -0.0744 0.0697     -1.07 No
Constant 1.0020 0.1280 49 49 7.83 Yes
NL (2) -0.0294 0.0826     -0.36 No
Constant 1.0578 0.0524 48 48 20.17 Yes
SHDW (2) -0.1812 0.0856     -2.12 Yes
SHDW (3) -0.2750 0.1190     -2.32 Yes
Constant 0.8316 0.0752 49 49 11.05 Yes
LU (2) 0.1774 0.0885     2.01 Yes

Note: Estimates for factors (2) and (3) are the differences compared with the reference level (1).