Research Article

Exponentiated Gamma Distribution: Different Methods of Estimations

Table 1

Bias estimates and MSEs of are presented, when is known.

Method = 0.25 = 0.5 = 1 = 2 = 2.5

10MLE0.132690.315810.122980.191460.24863
0.041930.154490.159970.594250.95929
MME0.141140.249360.76652 − 0.762361.21176
0.019920.062180.587560.581191.46835
PCE0.054430.22400 − 0.05708 − 0.18646 − 0.19735
0.024520.086530.112200.470120.75097
LSE1.256130.929011.186880.201330.18193
1.577860.863051.589711.021321.43291
WLSE1.216980.900291.138840.176990.16053
1.481050.810521.478310.828301.32242
UBE0.094420.234230.01069 − 0.02769 − 0.02624
0.028620.099220.11744 0.452420.72764

20MLE0.014880.02848 0.061640.095790.14010
0.003560.015780.069430.238920.40589
MME − 0.01385 − 0.007550.096270.077830.06881
0.011860.032020.121470.479540.72776
PCE − 0.05946 − 0.05620 − 0.06172 − 0.15758 − 0.22235
0.006710.020360.063880.237300.39565
LSE1.625961.364310.028480.070490.10051
2.646561.864040.092600.326100.55121
WLSE2.211331.873050.024950.063920.29974
4.894753.512030.084490.298100.90352
UBE0.001640.002060.00856 − 0.009000.00809
0.003020.013510.059300.207430.34867

50MLE0.010290.011940.025560.037830.05525
0.001350.005410.021710.093900.12927
MME − 0.02304−0.016140.023540.03965 − 0.01924
0.004760.011910.039310.166650.23736
PCE − 0.06374−0.05750 − 0.04838 − 0.10306 − 0.19602
0.005230.010700.024430.109660.18408
LSE1.588131.040300.021020.017000.03799
2.522871.083220.030640.115860.17602
WLSE2.205141.854720.019680.01582 − 0.49704
4.874533.440500.027250.107120.39058
UBE0.005080.001700.00505−0.002920.00414
0.001220.005060.020250.088810.12124

100MLE0.032970.140410.012010.021510.00560
0.001090.001970.011050.041720.06166
MME0.070160.042760.034280.04947 − 0.04117
0.004920.001830.001170.002450.00170
PCE0.03915 0.16972 − 0.03748 − 0.07757 − 0.10999
0.003080.02880 0.013170.053720.08057
LSE0.197180.171440.009630.01773 − 0.00567
0.038880.033380.015250.056120.08245
WLSE0.167000.225100.009340.01664 − 0.00374
0.027890.053880.013650.050630.07397
UBE0.030140.134010.001890.00129 − 0.01945
0.000910.001800.010690.04044 0.06078

The first entry is the simulated bias.
The second entry is simulated MSE.