Regression coefficients

Model term

Y1

Y2

Y3

Y4

Y5

Intercept

22.2847 (1.1205)

1.8608 (0.0589)

65.2523 (0.3336)

51.7167 (0.2112)

607.1644 (2.1368)

x1

12.1479 (0.5381)

0.3580 (0.0283)

5.5159 (0.1602)

2.4656 (0.1014)

29.6592 (1.0261)

x2

−2.1499 (0.5899)

−0.0285 (0.0310)

−0.8924 (0.1756)

1.0097 (0.1112)

16.4039 (1.1250)

x3

−8.5617 (0.5381)

0.0292 (0.0283)

0.5675 (0.1602)

0.3829 (0.1014)

5.1491 (1.0261)

x1*x1

1.4958 (0.9189)

0.2480 (0.0483)

0.8754 (0.2736)

−0.0071 (0.1732)

0.2271 (1.7524)

x2*x1

−2.1095 (0.7174)

0.1582 (0.0377)

0.6565 (0.2136)

−0.1479 (0.1352)

−2.7435 (1.3681)

x2*x2

2.5217 (0.9774)

0.0466 (0.0514)

−0.5885 (0.2910)

−0.1804 (0.1842)

−0.383 (1.8639)

x3*x1

−2.1788 (0.6498)

−0.0037 (0.0342)

−0.4981 (0.1935)

0.0025 (0.1225)

−0.2087 (1.2391)

x3*x2

−1.9400 (0.7174)

−0.0059 (0.0377)

0.0004 (0.2736)

−0.2629 (0.1352)

−2.7094 (1.3681)

x3*x3

2.3083 (0.9189)

0.0331 (0.0483)

−0.0102 (0.2136)

0.0992 (0.1732)

0.2721 (1.7524)

Coefficient of determination (R2)

0.9698

0.8987

0.9807

0.9643

0.9766