Table 5 - Variable Correlations

Table 5 - Variable Correlations

Note: All correlations are expressed as bivariate regression tests of "t" to facilitate comparison.

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Author Variable Variable
Cost Implementation Acceptability
Arnold Effectiveness 4.46 4.37 2.56
Arnold Cost   6.12 -0.28
Arnold Implementation     -1.54
Downs Effectiveness 1.42 -0.13 -2.2
Downs Cost   0.68 -4.02
Downs Implementation     -2.27
Zupan Effectiveness -1.54 0.18 -2.08
Zupan Cost   0.49 1.72
Zupan Implementation     -2.59

* significant at 0.01 level
** significant at 0.05 level
*** 1.00 < t < 2.00
d.f. = degrees of freedom
HOV = high-occupancy vechicle
NA = not applicable
SOV = single-occupancy vehicle
SRSD = studentized residual
TDM = travel demand management
TMA = transportation management association
TSM = transportation system management
U = data are unavailable
VHT = vehicle hours of travel
VMT = vehicle-miles traveled
* Significant at 95% confidence interval.