Variable

Non-standardized coefficients

Standardized coefficients

t-test

Significance probability

B

Std. Error

Beta

Fixed

43.632

7.141

6.110

0.002

X₂

−7.134

0.907

−1.489

−7.865

0.001

X₃

−0.044

0.008

−2.259

−5.794

0.002

X₅

56.505

9.866

1.550

5.727

0.002

X₆

42.111

6.933

1.491

6.074

0.002

X₈

46.099

9.587

1.460

4.809

0.005