Practice Quiz

Six Sigma Green Belt

Category - Black Belt

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A marketing manager chooses a large sample of consumers from their target city to survey their attitudes and shopping behaviors. The manager divides his sample into groups with a 10 year age range (i.e. those 20-30 years). What type of probability sampling is he using?
  1. systematic sampling
  2. stratified sampling
  3. cluster sampling
  4. non-stratified sampling
Explanation
Answer: C - The manager is using cluster sampling.

Key Takeaway: Cluster sampling is a type of probability sampling whereby a population is divided into several clusters based on certain characteristics or demographic information. A random sample of individuals is then selected from each cluster and surveyed. Cluster sampling increases the likelihood that the sample chosen is representative of the population from which it is drawn.
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