Deanna has been hired to visit the local shopping mall to conduct a survey about the upcoming political election. She needs to select respondents at the mall and ask them questions about their voting tendencies. Voting records show that 50% of the local population are registered as Republicans, 35% are registered as Democrats, and the remaining as Independents. Deanna wants to be sure that her final sample has a similar proportion of voters. Which of the following sampling techniques best describes Deanna's method?

Question

Quizplus · Accepted Answer

Deanna's method is stratified sampling because she wants her sample to reflect the same proportions of Republicans, Democrats, and Independents as in the local population. Stratified sampling involves dividing the population into distinct subgroups (strata) and then drawing a sample from each subgroup proportional to its size in the population.

Deanna Has Been Hired to Visit the Local Shopping Mall