RMSE

α

β

t_α

t_β

p_α

p_β

OLS

0.4990

−0.0084

1.3840

−0.4853

7.2245

0.6312

0.0000

Huber

0.5108

−0.0202

1.2092

−1.7697

9.5200

0.0877

0.0000

Bisquare

0.5172

−0.0235

1.1695

−2.1056

9.4033

0.0443

0.0000

Fuzzy

0.5225

−0.0297

1.1839