Which of the following meets the requirements of a stratified random sample?
A) A population contains 10 members under the age of 25 and 20 members over the age of 25. The sample will include six people who volunteer for the sample.
B) A population contains 10 members under the age of 25 and 20 members over the age of 25. The sample will include six people chosen at random, without regard to age.
C) A population contains 10 members under the age of 25 and 20 members over the age of 25. The sample will include six males chosen at random, without regard to age.
D) A population contains 10 members under the age of 25 and 20 members over the age of 25. The sample will include two people chosen at random under the age of 25 and four people chosen at random over 25.

Question

Quizplus · Accepted Answer

A stratified random sample involves dividing the population into distinct strata and then selecting a random sample from each stratum. In this case, the population is divided into two strata based on age (under 25 and over 25). Choice D involves selecting a random sample of two individuals from the under-25 stratum and four individuals from the over-25 stratum, which meets the requirements of a stratified random sample. Choices A, B, and C do not involve stratifying the population based on age and therefore do not meet the requirements of a stratified random sample.

Which of the Following Meets the Requirements of a Stratified