An airline offers a certain flight once per day that usually contains about 250 passengers. The flight offers seats in first class (most expensive), business class, and economy class (least expensive). The airline wants to survey 500 passengers of this flight about their overall satisfaction. The passengers will be selected using a cluster random sample where each flight is a cluster. Why might the airline choose a cluster random sample instead of a simple random sample in this setting?

Krish Crosby 2022-09-24 Answered
An airline offers a certain flight once per day that usually contains about 250 passengers. The flight offers seats in first class (most expensive), business class, and economy class (least expensive). The airline wants to survey 500 passengers of this flight about their overall satisfaction. The passengers will be selected using a cluster random sample where each flight is a cluster. Why might the airline choose a cluster random sample instead of a simple random sample in this setting?
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Answers (1)

altaryjny94
Answered 2022-09-25 Author has 14 answers
The cluster sampling involves fewer resources for sampling while compared to simple random sampling.
Here, the population under study is people travelling the flight which is externally homogeneous.
The people travelling in the flight are classified as three groups namely first class (most expensive), business class, and economy class (least expensive) which is internally heterogeneous.
More number of persons can be included in the survey which acts as good representative of entire population.
Thus, cluster sampling is suitable for this study.
The simple random sampling may result in unequal number of persons in each class if the persons are surveyed at random.
So, cluster sampling better suits the scenario than the simple random sampling.
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