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Mathematical Problems in Engineering
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2015
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Article
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Tab 6
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Research Article
Calculating the Contribution Rate of Intelligent Transportation System in Improving Urban Traffic Smooth Based on Advanced DID Model
Table 6
Regression results.
Variable
Coef.
Robust std. err.
95% conf. interval
GDP
2.7
0.007
CVECH
0.24
0.814
RODM
0.796
POP
0.019
_cons
0