In Neyman allocation for stratified sampling, a larger sample is generally assigned to a stratum that has a larger:
Correct answer: D. Product of size and variability
- A. Population size only
- B. Within stratum variability only
- C. Sampling frame code
- D. Product of size and variability
Explanation
Neyman allocation considers both the size of a stratum and its within stratum standard deviation. Ignoring either factor can produce a less efficient allocation of the total sample.
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Sampling covers population and sample, sampling frames, simple random, systematic, stratified, cluster and convenience methods, along with sampling and non-sampling errors. Estimation includes sample statistics, population parameters, point estimates, confidence intervals and margins of error, with attention to how sample size affects precision.
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