When selecting a stratified sample, the sample size is:
A) determined for each stratum and selected from that stratum.
B) determined for each stratum and selected randomly from the entire unstratified population.
C) determined for the unstratified population and then apportioned to each stratum.
D) always larger than if unstratified sampling had been used.

Question

Quizplus · Accepted Answer

In a stratified sample, the sample size is determined for each stratum and selected from that stratum. This ensures that each stratum is represented proportionally in the sample, which can increase the precision and accuracy of the estimates.

When Selecting a Stratified Sample, the Sample Size Is