What is the primary function of sampling in research?

The primary function of sampling in research is to select a limited number of subjects that can represent a larger group. This approach allows researchers to make inferences about a population without the need to study every individual within that group, which can be impractical or impossible. By choosing a representative sample, researchers can gather data that reflects the characteristics and behaviors of the entire population, enabling more efficient and less costly data collection.

This method is particularly useful in areas like juvenile delinquency, where extensive data collection would be resource-intensive. A well-chosen sample can provide valuable insights and help to identify trends or patterns that can inform policy and preventive measures. In contrast, striving to document every case or analyze only specific subgroups would not yield as comprehensive a view of the larger population's issues or behaviors. Thus, the essence of sampling lies in its ability to serve as a microcosm of the broader demographic, facilitating broader conclusions from limited observations.