Research Article

Exponentiated Gamma Distribution: Different Methods of Estimations

Table 3

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

Method = 0.25 = 0.5 = 1 = 2 = 2.5

10MLE0.211130.472161.520191.723961.14780
0.226110.222932.310972.972034.56281
MME0.767270.499961.147691.117071.34613
0.588750.395332.710903.59468 12.94580
PCE0.599150.52863 − 0.81238−1.80674 2.06424
0.358980.279450.659973.264314.26110
LSE1.423444.799543.302921.811802.00336
2.0261823.0355010.90933.282624.01345
WLSE1.37249 4.135382.334512.886641.94695
1.8837417.101405.449948.332683.79060
LME0.25377 0.33619 − 0.835250.42838 − 0.30403
0.06440 0.11302 0.697640.183510.09243

20MLE0.05642 − 0.264990.206390.51890 − 0.63219
0.06938 0.112760.281921.761343.30157
MME − 0.02744 0.029450.249850.701640.68147
0.11071 0.076330.451913.401445.12740
PCE − 0.059940.16020 − 0.30593−0.59678 − 0.49013
0.833440.208410.906432.827422.21411
LSE 4.173851.645170.132191.99406 − 0.11114
17.527402.710210.942795.383583.77045
WLSE 4.530462.496670.064000.71230 − 0.14265
20.618106.235230.603724.523423.73948
LME− 0.12299 − 0.050960.140870.346210.28202
0.005260.052500.320471.912644.40559

50MLE0.029170.044330.069440.17997 − 0.35615
0.003220.012870.056520.368782.45495
MME − 0.02159 − 0.030430.079740.209950.01896
0.054080.021000.091180.588750.81280
PCE0.098650.30284 − 0.23200−0.37726 − 0.72448
0.042540.13493 0.571640.621981.36530
LSE 4.042851.414850.029000.91823 − 0.67959
16.384002.002640.210181.643071.06572
WLSE 4.462622.300010.025620.62267 − 0.87230
19.948505.290330.169171.251871.41209
LME − 0.00570 − 0.075780.028640.12927 − 0.07695
0.00259 0.018670.059080.382340.64602

100MLE0.04925 0.33618 0.042000.074150.08994
0.00243 0.11302 0.001760.123790.23124
MME0.19042 0.14178 − 0.151280.19460 − 0.09501
0.048974 0.02010 0.046280.233510.17784
PCE− 0.127530.03137 − 0.15234−0.27866 − 0.33585
0.016260.000980.110040.363320.55157
LSE7.158940.365870.083700.383560.15933
23.587480.133860.007010.147120.02539
WLSE6.48572 0.651820.065340.303040.11907
25.851760.424870.004270.091830.01418
LME0.208300.28730 − 0.034860.471060.04308
0.043390.08254 0.001210.221900.00186

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