identify which sampling method should be utilized by the researcher.

Use the following system:

A. simple random sampling

B. systematic random sampling

C. cluster sampling

D. stratified sampling

E. random digit dialing

F. multistage sampling

Question :

In a survey of Athens county voters, a researcher divides her sampling frame into age brackets (e.g., 18-24, 25-40, 41-55, etc.) and randomly samples 50 individuals from each age bracket.