d

${\beta }_2$

$\left(\sigma =1\right)$

Fit to 4 points

Fit to 3 points

Exponential

Quadratic

Exponential

Quadratic

Fits

Residual

Fits

Residual

Fits

Residual

Fits

Residual

1

3.000

3.21

−0.2188

8.52

−5.52

3.2523

−0.2523

3.0

0.0

2

15.000

12.829

2.1708

−1.56

16.56

12.7630

2.2370

15.0

0.0

3

46.200

51.134

−4.9342

62.76

−16.56

50.0855

−3.8855

46.0

0.0

4

207.000

203.808

3.1922

201.48

5.52

5

733.157

6

3037.836

MAPE

8.4966

83.2277

10.5780

0.00

MAD

2.6290

11.0400

2.1229

0.00

MD

9.8239

152.3520

6.7217

0.00