Before premiering a blockbuster movie at a theater, test screenings are done beforehand. A small number of selected theaters are chosen geographically throughout the country. Each theater chosen Is supposed to be representative of theatergoers in that area. Everyone is interviewed when the
Movie is over. Identify the type of sampling used in this example.
A)Systematic sampling
B)Cluster sampling
C)Stratified sampling
D)Attempted census

Question

Before premiering a blockbuster movie at a theater, test screenings are done beforehand. A small number of selected theaters are chosen geographically throughout the country. Each theater chosen Is supposed to be representative of theatergoers in that area. Everyone is interviewed when the
Movie is over. Identify the type of sampling used in this example. 
A)Systematic sampling
B)Cluster sampling
C)Stratified sampling
D)Attempted census

Quizplus · Accepted Answer

Cluster sampling is used here because the theaters are selected as whole groups (clusters) that are supposed to represent the larger population of theatergoers geographically.

Before Premiering a Blockbuster Movie at a Theater, Test Screenings