Polynomial Regression

X-Variable:

Horsepower

Y-Variable:

Mileage

Y-Weightings:

N

R

R-Square

Std.Error

normal

72

0.716106522

0.512808551

3.201193259

corrected

0.700938521

0.49131481

95%

Coefficient

Conf. (±)

Std.Error

T

P

Constant

31.39761035

4.885580368

2.448244342

12.82454117

8.04638E-20

X

-0.34087278

0.13534318

0.067822684

-5.025940583

3.87252E-06

X ^ 2

0.002003233

0.001091892

0.000547165

3.661114558

0.00049197

X ^ 3

-3.79134E-06

2.51266E-06

1.25914E-06

-3.011062054

0.003651949