Mary Hall is a editor for Investopedia's Advisor Insights, in addition to being the editor of several books and doctoral papers. Mary received her bachelor's in English from Kent State University with ...

The efficiencies of the six proposed combined-type estimators are first compared with that of the customary combined ratio estimator in estimating the population ratio of two population means under ...

Hi, thanks for sharing this excellent work! In the paper, you mention: “For the MATH dataset, we select 519 problems from different levels using stratified sampling.” I wanted to clarify how this ...