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 ...

Suppose that the sample of students described in the previous section was actually selected using stratified random sampling. In stratified sampling, the study population is divided into ...

This is a preview. Log in through your library . Abstract A type of population frequently encountered in extensive samplings is one in which the variance within a group of elements increases steadily ...