Model Summary

R

R Square

Adjusted R Square

Std. Error of the Estimate

0.390

0.152

0.011

19.317

The independent variable is Serial No

ANOVA

Sum of Squares

df

Mean Square

F

Sig.

Regression

1206.392

3

402.131

1.078

0.384

Residual

6716.699

18

373.150

Total

7923.091

21

The independent variable is Serial No

Coefficients

Unstandardized Coefficients

Standardized Coefficients

t

Sig.

B

Std. Error

Beta

Serial No

-11.339

7.266

-3.791

-1.560

0.136

Serial No ** 2

1.242

0.726

9.837

1.712

0.104

Serial No ** 3

-0.036

0.021

-6.145

-1.739

0.099

(Constant)

35.542

19.735

1.801

0.088