One obvious advantage of stratified sampling is that we obtain separate estimates within each stratum - which we would not obtain if we took a simple random sample from the entire population.A more important advantage is that we can increase the accuracy of the resulting population estimates by using appropriately defined strata.

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Stratified sampling allows for more accurate population estimates because it ensures that each subgroup (stratum) of the population is adequately represented in the sample, reducing sampling error compared to simple random sampling.

One Obvious Advantage of Stratified Sampling Is That We Obtain