35. 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?
Answer: B
Systematic sampling is being used.
The researcher is employing a systematic sampling method by selecting every 200th customer from the list of customers. This approach ensures a regular interval between selections, which is characteristic of systematic sampling.
A) Stratified
Stratified sampling involves dividing the population into distinct subgroups (strata) and then sampling from each stratum. Since the researcher is not segmenting the customer list into subgroups before selection, this option is incorrect.
B) Systematic
Systematic sampling is defined as selecting members of a population at regular intervals, which is exactly what the researcher is doing by choosing every 200th customer. This method is efficient and helps to ensure that the sample is evenly distributed across the entire customer list.
C) Judgment
Judgment sampling, also known as purposive sampling, relies on the researcher's discretion to select participants based on specific criteria. This method is not being employed here, as the selection process is based on a fixed interval rather than the researcher's judgment.
D) Quota
Quota sampling involves setting a predetermined number of participants from various segments of the population. Since the researcher is not filling quotas from different segments but rather selecting customers at a fixed interval, this option does not apply.
Conclusion
The systematic sampling method is clearly the correct choice because it involves a structured approach to selection based on a fixed interval. All other options fail to accurately describe the method being used, as they involve different criteria for selection that do not align with the scenario presented.