A sample drawn such that known subgroups within a population are represented in proportion to their numbers in the population is a ______ sample.

Question

Quizplus · Accepted Answer

A stratified sample is a sample that is drawn such that known subgroups within a population are represented in proportion to their numbers in the population. This ensures that the sample is representative of the population and reduces the sampling error. Option B (control) and D (random) do not accurately describe this type of sample, and option C (biased) implies that the sample is not representative, which is not the case for a stratified sample.

A Sample Drawn Such That Known Subgroups Within a Population