In research, what is a sample defined as?

A sample in research is defined as a randomly selected group from the target population, making this answer accurate. The concept of sampling is fundamental in research as it allows researchers to gather data and make inferences about a larger population without needing to survey every single individual within that population. By selecting a representative group, researchers can analyze this subset to draw conclusions that can extrapolate to the whole.

This approach not only saves time and resources but also helps ensure the findings are statistically valid if randomness and proper sampling methods are employed. A well-defined sample can reflect the characteristics of the entire population, which is crucial for effective analysis.

In contrast, a complete survey population refers to the entirety of the group being studied, which is not representative of the sampling concept. A case study involves an in-depth investigation of a single individual, group, or event, and is not representative of a broader sampling strategy. A qualitative assessment generally refers to non-numerical data or insights collected through interviews, focus groups, or other means that do not follow a strict quantitative sampling method. Therefore, defining a sample as a randomly selected group from the target population best captures its purpose in research.