Research Article

Estimation of Generalized Gompertz Distribution Parameters under Ranked-Set Sampling

Table 2

Bias and MSE of the MLE and Bayes estimates under RSS and SRS for different sample sizes and different set sizes when , , and .

MLEBayesMLEBayesMLEBayes
SamplingBiasMSEBiasMSEBiasMSEBiasMSEBiasMSEBiasMSE

SRS1.1390.4871.1481.1465.3891.7950.1850.1450.211
RSS20.8860.4210.8090.9533.7071.3270.1380.1270.147
50.5350.3000.4590.8322.9181.2400.0510.0810.057

SRS0.4490.3630.4520.4811.0900.4540.0400.0790.046
RSS20.3720.3200.3720.4300.9250.4230.0310.0710.036
50.2710.2530.2570.3700.7000.3280.0190.0550.022

SRS0.1720.2800.2170.1700.2410.1600.0120.0490.015
RSS20.1480.2400.1840.1580.2230.1640.0100.0440.012
50.1120.2070.1400.1340.1800.1410.0070.0380.008

SRS0.0870.2230.1440.0850.1010.1120.0050.0360.007
RSS20.0750.1980.1210.0700.0900.1030.0050.0330.006
50.0540.1590.0890.0680.0770.0930.0030.0290.005