Marketing Research and Insight Glossary

Definitions, common uses and explanations of 1,500+ key market research terms and phrases.

What is a Representative sample?

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Representative sample Definition

A sample in which each unit has an equal and independent chance of selection. Also known as probability sample or random sampling.

A representative sample is a subset of a population that accurately reflects the characteristics of the larger group, including demographics, behaviors or attitudes. It ensures that insights drawn from the sample can be generalized to the broader population.

Who relies on representative samples in market research?

Market researchers, polling organizations, consumer insights teams, statisticians and policy researchers rely on representative samples to produce valid, actionable and generalizable findings.

What are the key aspects of representative samples in market research?

  • Matches key traits of the target population.
  • Achieved through probability sampling methods.
  • Minimizes selection bias.
  • Requires accurate population data.
  • May involve quotas or stratified sampling techniques.

Why are representative samples important in market research?

They provide confidence that research results reflect the true opinions or behaviors of the intended audience. Without representativeness, findings may be skewed, limiting their reliability for strategic decisions.

How do market researchers use representative samples?

Researchers design surveys and studies using sampling frameworks that mirror the population. They validate sample composition and apply weighting if needed to ensure balanced insights that can inform marketing, product development or policy.