Table 23: Summary result for cubic regression model on university buses.

 

Model Summary

 

R

R Square

Adjusted R Square

Std. Error of the Estimate

 

0.353

0.125

-0.021

24.450

 

The independent variable is Serial No.

ANOVA

 

Sum of Squares

df

Mean Square

F

Sig.

Regression

1533.788

3

511.263

0.855

0.482

Residual

10760.212

18

597.790

 

 

Total

12294.000

21

 

 

 

The independent variable is Serial No

Coefficients

 

Unstandardized Coefficients

Standardized Coefficients

t

Sig.

B

Std. Error

Beta

Serial No

-2.311

9.197

-0.620

-0.251

0.804

Serial No ** 2

-0.046

0.918

-0.291

-0.050

0.961

Serial No ** 3

0.005

0.026

0.653

0.182

0.858

(Constant)

30.552

24.979

 

1.223

0.237