Question

to determine customer satisfaction with their service department, an automobile dealer randomly selects 20 hybrid-vehicle owners, 20 suv owners, and 20 sedan owners and sends them a survey.

what type of sampling is used?

• cluster
• convenience
• simple random
• stratified
• systematic

Explanation:

Analyze the sampling process

The population of automobile owners is divided into three distinct, non-overlapping subgroups (strata) based on the type of vehicle they own:

1. Hybrid-vehicle owners
2. SUV owners
3. Sedan owners

Evaluate the selection method

The dealer randomly selects a specific number of individuals (20 owners) from each of these subgroups. This ensures that each subgroup is represented in the final sample.

Identify the sampling type

When a population is divided into subgroups (strata) and random samples are drawn from each subgroup, this is known as Stratified Sampling.

Answer:

• cluster
• convenience
• simple random
• stratified (Correct answer)
• systematic