Regression coefficient

Value

Standard error

P-Value

β1

95.359

0.475

 

Linear

β1

2.024

0.316

0.000

β2

0.186

0.316

0.028

β3

-1.219

0.316

0.003

Quadratic

β11

-0.610

0.308

0.075

β22

-2.295

0.308

0.000

β33

-1.334

0.308

0.001

Interaction

β12

-0.396

0.412

0.039

β13

-0.228

0.412

0.020

β23

-0.210

0.412

0.212

Rsq

0.927

 

 

Rsq(adj)

0.862

 

 

Table 4: Regression coefficients of the fitted quadratic equation and standard errors.