10.5 Properties of estimators For same observables,we can define different ( How can we comment each a()? ·Unbiased ·Consistent ·Sufficient Minimum-variance estimates (efficient) Asymptotically efficient Asymptotically normal UESTC 77 UESTC 10.5 Properties of estimators For same observables, we can define different . How can we comment each ? • Unbiased • Consistent • Sufficient • Minimum-variance estimates (efficient) • Asymptotically efficient • Asymptotically normal α ˆ( y) α ˆ( y)