Stratifying a population prior to drawing a sample
A) generally occurs when the variables used to stratify are known to be associated with the dependent variable.
B) eliminates the need for simple random sampling.
C) is most useful for studying a homogeneous population.
D) eliminates the need for probability sampling.

Question

Stratifying a population prior to drawing a sample​
A) ​generally occurs when the variables used to stratify are known to be associated with the dependent variable.
B) eliminates the need for simple random sampling.​
C) is most useful for studying a homogeneous population.​
D) eliminates the need for probability sampling.​

Quizplus · Accepted Answer

Stratifying a population prior to drawing a sample is useful when the variables used for stratification are known to be associated with the dependent variable. This helps ensure that the sample is representative of the population and can increase the precision of estimates. Simple random sampling can still be used within each stratum, and probability sampling is still necessary to maintain the generalizability of the findings. Stratifying a population is helpful for both homogeneous and heterogeneous populations.

Stratifying a Population Prior to Drawing a Sample​

Stratifying a Population Prior to Drawing a Sample