A research team studied alcohol use among nursing students at private universities. The first sampling selected eight states, then randomly selected two universities in each state, and then randomly sampled students from each program. This sampling process is referred to as

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Cluster sampling is a variation of random sampling that is used when the population of interest is geographically widely scattered and it would be difficult, if not impossible, to develop a sampling frame. In purposive sampling, the researcher uses personal knowledge of a population to consciously select. Systematic sampling is a variation of simple random sampling that can be used when the sampling frame has no meaningful underlying order.

A Research Team Studied Alcohol Use Among Nursing Students at Private