Research Article

Exponentiated Gamma Distribution: Different Methods of Estimations

Table 2

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

Method = 0.25 = 0.5 = 1 = 2 = 2.5

10MLE0.318110.183920.111450.097870.11787
0.586720.216900.077030.044210.04936
MME0.320330.176160.111450.097020.10992
0.785350.221570.077030.044740.04646
PCE − 0.05303 − 0.02370 − 0.02479 − 0.01796 − 0.01759
0.169910.129090.067610.038900.03475
LSE − 0.497790.274500.313330.43391 − 0.13358
0.247960.23511 0.229400.188280.02373
WLSE1.254070.243470.302010.04305 − 0.12468
5.712910.316660.216570.032980.02343
MLE0.318110.183920.111450.097870.11787
0.586720.216900.077030.044210.04936

20MLE0.939200.087150.031080.011780.02822
0.225750.086460.028620.014880.01642
MME0.950020.086470.031100.013520.02613
0.269470.089360.028610.015060.01567
PCE0.65305 − 0.07187 − 0.06136 − 0.04752 − 0.04746
0.104160.066480.034260.019190.01706
LSE1.087090.711350.025530.02546 − 0.00643
0.210230.583390.034820.360110.01492
WLSE0.422260.420040.018170.00580 − 0.01538
0.261280.215200.031930.015790.01510
MLE0.939200.087150.031080.011780.02822
0.225750.086460.028610.014880.01642

50MLE0.862770.042950.007110.010660.01775
0.073610.025870.010540.005930.00615
MME0.870380.043430.007110.011230.01500
0.083320.026850.010540.005980.00589
PCE0.67724 − 0.05961 − 0.04379−0.02532 − 0.03890
0.049710.025900.014200.008020.00690
LSE0.602090.004010.003740.00952 − 0.01785
0.044240.025500.013360.006750.00543
WLSE0.33053 − 0.045800.003220.00918 − 0.04761
0.192290.016850.012140.006380.01093
MLE0.862770.042950.007110.010660.01775
0.073610.025870.010540.005930.00615

100MLE − 0.21280 − 0.128270.006320.004700.00250
0.05254 0.021810.004800.002920.00222
MME− 0.25157 − 0.142610.006320.005170.00245
0.06987 0.025440.004800.002930.00225
PCE− 0.17997 − 0.10697 − 0.02831 − 0.01738 − 0.01960
0.043060.019850.006810.004050.00344
LSE− 0.16872 − 0.077180.005090.003720.00268
0.028470.005960.005850.003290.00250
WLSE− 0.31292 − 0.140280.004840.003590.00234
0.103230.019680.005450.003100.00234
MLE− 0.21279 − 0.128270.006330.004700.00250
0.052540.021810.004800.002920.00222

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