Research Topics:

Quantitative Research | Sampling

Content Type:

Glossary

Fixed Sample Definition

The repeated observation of the same sample of respondents over a period of time.

A fixed sample in marketing research is the repeated observation of the same sample of respondents over a period of time. It refers to a predetermined and permanent group of participants or data points included in a study. This process of collecting data from a fixed and specific subset contrasts with dynamic or changing sample sizes. An advantage of using fixed samples is the consistent collection and analysis of data, which can translate into more accurate insights into consumer behaviors, preferences and trends over time. 

Who relies on fixed samples?

Researchers and marketing professionals commonly include fixed samples in surveys, experiments and studies to maintain consistency and control over the data collection process.

Why should I care about fixed samples?

Fixed samples can impact the reliability and validity of research results because they make certain that the same number of participants remain throughout the study. That helps maintain statistical integrity and make the findings more credible.