Analysis of Variance Table

Response: nGDP

DF

Sum Sq

Mean Sq

F Value

Pr (>F)

Speed

1

68.352

68.352

31.827

0.011021

*

NTrks

1

27.825

27.825

12.957

0.036775

*

VRPStr

2

58.570

29.285

13.636

0.031197

*

IntrDep

1

88.891

88.891

41.391

0.007613

**

Residuals

3

6.443

2.148

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Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1‘’1