What is a sample in the context of surveys?

In the context of surveys, a sample is defined as a subset of individuals selected from a larger population, designed to represent that whole population. This approach allows researchers to draw conclusions about the broader group without needing to survey everyone, which can be logistically complex and costly.

Using a well-chosen sample provides insights that can be generalized, as long as the sample accurately reflects the diversity and characteristics of the entire population. Random sampling methods are often employed to reduce bias and ensure that every individual has an equal chance of being selected, which enhances the representativeness of the findings.

The other options do not accurately describe a sample in survey methodology: the entire population refers to everyone who meets the criteria of the study, random selection of survey questions pertains to the variety of questions asked rather than the individuals surveyed, and opinions gathered in a public forum do not represent a structured approach to sampling.