A researcher knows that 12 percent of a target population is African American and 9 percent is Hispanic American. The researcher selects her sample so that she ends up with a sample containing exactly 12 percent African Americans and 9 percent Hispanic Americans. This researcher used a ______ sample.

Question

Quizplus · Accepted Answer

A stratified sample is one in which the entire population is divided into smaller groups or strata based on certain characteristics (in this case, race/ethnicity), and a random sample is taken from each stratum. This ensures that the sample reflects the same proportions of each group as in the population. Therefore, the researcher used a stratified sample in this scenario.

A Researcher Knows That 12 Percent of a Target Population