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For example , you could stratify -LRB- group -RRB- your college population by department and then choose a proportionate simple random sample from each stratum -LRB- each department -RRB- to get a stratified random sample . To choose a simple random sample from each department , number each member of the first department , number each member of the second department , and do the same for the remaining departments . Then use simple random sampling to choose proportionate numbers from the first department and do the same for each of the remaining departments . Those numbers picked from the first department , picked from the second department , and so on represent the members who make up the stratified sample . To choose a cluster sample , divide the population into clusters -LRB- groups -RRB- and then randomly select some of the clusters .
Please check all the words that can be used instead of the target word in the same context. Note that the morphology of the target (third person singular, past tense etc.) is considered to be applied to the candidate automatically in the process of paraphrasing.