Question:
Which of the following problems is not related to stratified sampling?
Which of the following problems is not related to stratified sampling?
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Ask which of the four choices would still need to be decided even without any stratification at all.
Updated On: Jul 4, 2026
- Fixing the criterion for stratification
- Fixing the number of strata
- Fixing the sample size
- Fixing the points of demarcation between strata
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The Correct Option is C
Solution and Explanation
Step 1: List the design problems that are specific to stratified sampling. In the design of a stratified sample, the survey statistician has to decide: (a) the basis or criterion used to divide the population into strata, (b) how many strata (\(L\)) to form, and (c) where exactly to place the boundaries (points of demarcation) between one stratum and the next, especially when stratifying on a continuous variable.
Step 2: Compare this with fixing the overall sample size. Deciding the total sample size \(n\) is a problem faced in every sampling scheme, whether it is simple random sampling, systematic sampling, cluster sampling or stratified sampling. It depends on the budget, the desired precision and the population variance, not on the act of stratifying the population.
Step 3: Since fixing the sample size is a general sampling problem common to all designs and not something unique to the process of stratification, it is the odd one out among the given options.
Final Answer: Fixing the sample size is not a problem specifically related to stratified sampling.
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