________ sampling allows researchers to oversample groups so that researchers have more data on those groups than they would with simple random sampling.

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Stratified sampling involves dividing a population into subgroups (strata) based on some characteristic and then randomly selecting samples from each subgroup. By doing so, researchers can ensure that each stratum is represented in the sample and can oversample certain groups if necessary. This allows for more precise estimates of subgroup characteristics and reduces sampling error.

________ Sampling Allows Researchers to Oversample Groups So That Researchers