A researcher using stratified sampling wants to reduce the ____.

Question

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Stratified sampling is a sampling technique that involves dividing the population into homogeneous subgroups or strata and then drawing a random sample from each stratum. The purpose of stratified sampling is to reduce sampling error, which is the difference between the sample statistic and the population parameter. By ensuring that each stratum is represented in the sample, the researcher can obtain a more representative sample and reduce the sampling error. Therefore, reducing sampling error is the primary goal of stratified sampling.

A Researcher Using Stratified Sampling Wants to Reduce the ____