3 problems

Let Horvitz--Thompson estimators be constructed under complex sampling designs, and let the paper's fundamental equation be the equation referred to as $(\mathrm{general})$. Extens…

Let $\hat{\boldsymbol{\theta}}_{\boldsymbol{\mu}}^{(k)}$ be the pooled estimator after $k$ sampling stages, based on subsample sizes $n_k$, from a finite population of size $N$. Th…

In model-assisted estimation for survey data, the sampling design may involve features such as unequal weights, stratification, bootstrapping, and cross-validation. The predictive-…