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Author Question: Both cluster and stratified sampling rely on sub-groups in the population. If the sub-groups are all ... (Read 86 times)

Redwolflake15

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on: Jul 24, 2018
Both cluster and stratified sampling rely on sub-groups in the population. If the sub-groups are all very similar (they can all be considered mini-populations), which sampling method would be preferred?

Question 2

These questions pertain to how to collect a random sample of 800 airline passengers from 100 particular flights leaving San Francisco International Airport. Assume there are 200 passengers aboard each flight. Describe how to draw the sample as a systematic sample from these flights.


leeeep

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Reply #1 on: Jul 24, 2018
Answer to Question 1

Cluster sampling is the preferred method.

Answer to Question 2

A numbered list of all 100x200 = 20,000 passengers on these flights could be obtained. For a systematic sample, one should be drawn from each set of 20,000/800 = 25 passengers. Randomly choose among the first 25 passengers on the list to start, and then choose every 25th passenger until 800 passengers were obtained.


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