Research Article

The Use of Generalized Means in the Estimation of the Weibull Tail Coefficient

Table 2

Simulated optimal sample fraction (OSF), , mean value, and RMSE (both computed at the optimal level) of for , , , 0, and , , and from (0.75,1) underlying parents ().

100200500100020005000

OSF
0.40000.43500.35800.36000.34250.1930
0.40000.37000.23400.17600.11450.0668
0.28000.20500.13200.08100.06400.0388
0.17000.11500.07800.05400.03900.0218
0.10000.07000.04800.03400.02500.0140
0.27000.22500.14600.10300.06600.0432
0.47000.37500.21600.16200.11050.0582
1.00720.97230.95470.94780.94490.9485
0.92450.90520.91010.91420.92270.9319
0.85500.86480.87930.89680.90130.9138
0.81020.83330.85300.86960.88070.8972
0.76910.79810.82470.84380.85670.8776
1.26151.22311.18271.16291.14391.1307
1.19021.17151.14641.13531.12501.1119
RMSE
0.28080.18680.12060.09420.07810.0653
0.23110.17680.13690.11730.10230.0867
0.23020.19480.16190.14130.12480.1068
0.25470.22420.18800.16510.14780.1273
0.29100.25730.21800.19360.17380.1494
0.40480.31350.24160.20690.17980.1547
0.24920.21040.17480.15590.14090.1254