A researcher wants to get feedback from a sample of customers of an online retailer. The researcher selects every 200th customer from the list of customers. Which sampling method is being used?

Rationale

Systematic sampling is being used.

In systematic sampling, researchers select every nth individual from a list, which in this case involves selecting every 200th customer. This method provides a straightforward way to obtain a representative sample from a large population.

A (Stratified) YOUR ANSWER

Stratified sampling involves dividing the population into distinct subgroups (strata) and then randomly selecting samples from each subgroup. This method aims to ensure that specific segments of the population are adequately represented, unlike the approach described in the question, which does not involve any stratification.

B (Systematic) CORRECT

This is the correct choice as it describes the method where every 200th customer is selected from the list. Systematic sampling is efficient and can be implemented easily, making it suitable for this research scenario where a regular interval is used to choose participants.

C (Judgment) YOUR ANSWER

Judgment sampling relies on the researcher’s discretion to select participants they deem most representative of the population. This subjective approach does not apply here as the researcher is using a fixed interval rather than personal judgment to select customers.

D (Quota) YOUR ANSWER

Quota sampling involves setting specific quotas for different segments of the population and filling those quotas until they are met, typically using convenience sampling methods. This method is not used in this scenario, where a systematic interval is applied instead of predetermined quotas.

Conclusion

The researcher is employing systematic sampling by selecting every 200th customer from the list, which enables a structured approach to gather feedback efficiently. This method stands in contrast to other sampling techniques like stratified, judgment, and quota sampling, which involve different principles and methods for participant selection. Systematic sampling is particularly effective in ensuring a spread of participants across the entire customer list.

A researcher wants to get feedback from a sample of customers of an online retailer. The researcher selects every 200th customer from the list of customers. Which sampling method is being used?

Systematic sampling is being used.

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