ac

1.02915

0.30212

3.40644

elev

8.60610e−004

1.53256e−004

5.61550

elev

−8.36852e−004

2.36656e−004

−3.53615

aadt

4.80663e−005

1.81253e−005

2.65190

aadt

3.46083e−005

5.37191e−006

6.44246

Number of Observations

200

Number of Observations

93

Corrected R-squared

0.37965

Corrected R-squared

0.28931

Mean of Dependent Variable

6.20744

Mean of Dependent Variable

6.36397

Equipment Cost

Equipment Cost

Dependent Variable:

lneq

Dependent Variable:

lneq

Indept Variable

Estimated Coefficient

Standard Error

t-Statistic

Indept Variable

Estimated Coefficient

Standard Error

t-Statistic

one

7.03420

0.59595

11.80334

one

4.25812

0.47823

8.90389

age

6.51333e−002

1.33239e−002

4.88845

lyear

−0.86702

0.23076

−3.75726

ac

0.92762

0.23842

3.89062

elev

4.30691e−004

9.87603e−005

4.36097

elev

−1.07228e−003

1.84905e−004

−5.79908

aadt

3.55617e−005

1.16802e−005

3.04463

aadt

2.61492e−005

4.23932e−006

6.16825

Number of Observations

201

Number of Observations

93

Corrected R-squared

0.43240

Corrected R-squared

0.22537

Mean of Dependent Variable

6.41503

Mean of Dependent Variable

6.29168