Sample

Our definition of Sample: 

The set of individuals selected from a larger panel population who are invited to participate in a given research initiative, from which information regarding the whole can be inferred. Often, samples are created to represent a specific market, audience, political base, or customer base, depending on the goals of the market research project.

A sample size refers to the number of panelists participating in a research study, while sample distribution is a measurement of the responses from a single sample, organized by frequency. A sampling error is an inaccuracy that is associated with using the sample results as an indication of the whole.