$\stackrel{^}{\beta }$ Method n = 50 n = 100 Bias SD JackSD MSE CP Bias SD JackSD MSE CP ${\stackrel{^}{\beta }}_{0}$ CM 0.0008 0.0148 0.0147 0.0002 0.944 0.0002 0.0103 0.0102 0.0001 0.954 CRM 0.0008 0.0148 0.0147 0.0002 0.944 0.0002 0.0103 0.0102 0.0001 0.954 SCM 0.0359 0.3585 0.3813 0.1298 0.976 0.0058 0.2479 0.2592 0.0615 0.970 M1 0.0012 0.0161 0.0164 0.0003 0.942 0.0002 0.0117 0.0114 0.0001 0.942 M2 (1) 0.0008 0.0148 0.0147 0.0002 0.942 0.0002 0.0103 0.0102 0.0001 0.950 M2 (2) 0.0008 0.0148 0.0147 0.0002 0.942 0.0002 0.0103 0.0102 0.0001 0.950 M2 (3) 0.0002 0.0180 0.0184 0.0003 0.932 0.0004 0.0126 0.0127 0.0002 0.940 M2 (4) 0.0003 0.0170 0.0174 0.0003 0.938 0.0003 0.0120 0.0120 0.0001 0.938 M2 (5) 0.0004 0.0167 0.0170 0.0003 0.940 0.0003 0.0118 0.0117 0.0001 0.940 ${\stackrel{^}{\beta }}_{1}$ CM −0.0007 0.0217 0.0212 0.0005 0.938 0.0004 0.0142 0.0145 0.0002 0.960 CRM −0.0007 0.0217 0.0212 0.0005 0.938 0.0004 0.0142 0.0145 0.0002 0.960 SCM 3.5157 0.9454 0.8777 13.2539 0.000 3.4392 0.6212 0.6107 12.2137 0.000 M1 −0.0005 0.0159 0.0154 0.0003 0.940 0.0004 0.0104 0.0106 0.0001 0.960 M2 (1) −0.0007 0.0217 0.0212 0.0005 0.936 0.0004 0.0142 0.0145 0.0002 0.962 M2 (2) −0.0007 0.0217 0.0212 0.0005 0.936 0.0004 0.0142 0.0145 0.0002 0.962 M2 (3) −0.0008 0.0271 0.0262 0.0007 0.910 −0.0002 0.0180 0.0178 0.0003 0.938 M2 (4) −0.0008 0.0257 0.0249 0.0007 0.914 −0.0001 0.0170 0.0169 0.0003 0.938 M2 (5) −0.0008 0.0252 0.0245 0.0006 0.918 −0.0001 0.0167 0.0166 0.0003 0.938 ${\stackrel{^}{\beta }}_{2}$ CM 0.0012 0.0217 0.0213 0.0005 0.932 −0.0005 0.0150 0.0145 0.0002 0.918 CRM 0.0012 0.0217 0.0213 0.0005 0.932 −0.0005 0.0150 0.0145 0.0002 0.918 SCM 0.9000 0.4932 0.4847 1.0532 0.516 0.8954 0.3160 0.3233 0.9017 0.190 M1 0.0008 0.0158 0.0156 0.0002 0.932 −0.0003 0.0110 0.0106 0.0001 0.928 M2 (1) 0.0012 0.0217 0.0213 0.0005 0.932 −0.0005 0.0150 0.0145 0.0002 0.920 M2 (2) 0.0012 0.0217 0.0213 0.0005 0.930 −0.0005 0.0150 0.0145 0.0002 0.922 M2 (3) 0.0009 0.0265 0.0265 0.0007 0.942 −0.0007 0.0172 0.0180 0.0003 0.948 M2 (4) 0.0010 0.0250 0.0251 0.0006 0.948 −0.0007 0.0165 0.0170 0.0003 0.946 M2 (5) 0.0010 0.0245 0.0247 0.0006 0.948 −0.0006 0.0162 0.0166 0.0003 0.948