In _________ sampling, the population is divided into subgroups, and a simple random sample is drawn from each subgroup.
- Cluster
- Simple Random
- Stratified
- Systematic
In stratified sampling, the population is divided into non-overlapping groups, or strata, such as age groups, income levels, or gender. Then, a simple random sample is taken from each stratum. Stratified random sampling can provide more precise estimates if the strata are relevant to the characteristic of interest.
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