List of top Statistics Questions on Estimation Theory asked in CPET

If S(x) is any sufficient statistic and M(x) is a minimal sufficient statistic for the parametric function \(\tau(\theta)\), then which of the following is not correct for M(x) ?

If \(t_n\) is an efficient estimator of the population mean \(\mu\), then :

Rao-Blackwell theorem enables us to obtain minimum variance unbiased estimator through :