Representative Sample

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DEFINITION of 'Representative Sample'

A subset of a statistical population that accurately reflects the members of the entire population. A representative sample should be an unbiased indication of what the population is like. In a classroom of 30 students in which half the students are male and half are female, a representative sample might include six students: three males and three females.

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BREAKING DOWN 'Representative Sample'

When a sample is not representative, the result is known as a sampling error. Using the classroom example again, a sample that included six students, all of whom were male, would not be a representative sample. Whatever conclusions were drawn from studying the six male students would not be likely to translate to the entire group since no female students were studied.

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RELATED FAQS
  1. How can I use systematic sampling with stratified sampling?

    Statistics offers different sampling methods for dealing with large populations; two common methods are systematic sampling ... Read Full Answer >>
  2. How do researchers ensure that a simple random sample is an accurate representation ...

    Researchers employ several safeguards to ensure that a simple random sample accurately represents a larger population. They ... Read Full Answer >>
  3. What's the difference between a representative sample and a convenience sample?

    A representative sample properly represents the statistical population from which it is chosen, whereas a convenience sample ... Read Full Answer >>
  4. What percentage of the population do you need in a representative sample?

    Technically, a representative sample requires only whatever percentage of the statistical population is necessary to replicate ... Read Full Answer >>
  5. What's the difference between a representative sample and a random sample?

    A representative sample is a group or set chosen from a larger statistical population or group of factors or instances that ... Read Full Answer >>
  6. What's the difference between a representative sample and an unbiased sample?

    A representative sample is a group that is chosen to depict or represent a larger population according to one or more characteristics ... Read Full Answer >>
  7. What is the difference between a simple random sample and a stratified random sample?

    Simple random samples and stratified random samples differ in how the sample is drawn from the overall population of data. ... Read Full Answer >>

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