Table 3 Average bias and RMSE (in parentheses) of estimates for α and β with n=100 under the four models

Estimator of α

Estimator of β

\(\hat \alpha ^{\text {MLE}}\)

\(\hat \alpha ^{\text {IQR}}_{1}\)

\(\hat \alpha ^{\text {RC}}_{1}\)

\(\hat \alpha ^{\text {IQR}}_{2}\)

\(\hat \alpha ^{\text {RC}}_{2}\)

\(\hat \beta ^{\text {MLE}}\)

\(\tilde \beta ^{\mathrm {M}}\)

\(\hat \beta ^{\text {HL}}\)