A stratified random sample should be used when
A) the population has identifiable subgroups that are of interest to the researcher
B) the sample constitutes the population.
C) the population is very small
D) there is no way of estimating the probability that a particular subgroup will be included in the sample

Question

Quizplus · Accepted Answer

A stratified random sample is used when the population has identifiable subgroups that are of interest to the researcher. The aim of using a stratified random sample is to ensure that each subgroup is proportionately represented in the sample, which makes it easier to generalize the findings to the entire population.

A Stratified Random Sample Should Be Used When