Research Methodology: Sampling
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Questions and Answers

What is the primary purpose of sampling in research?

  • To draw conclusions about the research process
  • To investigate the entire population
  • To select a small but well-chosen group of elements that represents a much wider group (correct)
  • To analyze the data collected

    • What should be considered when selecting a sample?

  • The size of the population
  • The type of research being conducted
  • The availability of resources
  • All of the above (correct)

    • What is the main difference between probability and nonprobability sampling?

  • The level of accuracy required
  • The size of the sample
  • The type of research being conducted
  • The method of selecting the sample (correct)

    • What is the purpose of identifying the factors that influence the sample size?

    <p>To determine the sample size</p> Signup and view all the answers

    What is the role of sampling in the research process?

    <p>It is an integral part of the research process</p> Signup and view all the answers

    What is the purpose of the self-evaluation assessment?

    <p>To test the student's understanding of the content</p> Signup and view all the answers

    What is the purpose of the YouTube links provided?

    <p>To provide additional learning resources</p> Signup and view all the answers

    What is the main difference between a population and a sample?

    <p>The population is the larger group, while the sample is a smaller group that represents the population</p> Signup and view all the answers

    What is the purpose of drawing a sample in practice?

    <p>To apply the concepts learned in a practical scenario</p> Signup and view all the answers

    What is the role of the research process in sampling?

    <p>It is an integral part of the research process</p> Signup and view all the answers

    Study Notes

    Sampling

    • Researchers must select a sample from a population, as studying the entire population is often too large and unmanageable.
    • Sampling provides a more accurate picture of the population than researching the entire population.
    • A census, or studying the entire population, is expensive, time-consuming, and not always suitable for all studies.

    Importance of Sampling

    • Sampling is a vital part of the research process.
    • The strategies for choosing a sample influence both the results and the researcher's interpretation of these results.

    Defining the Population

    • The population that interests researchers is often too large to study directly.
    • Researchers need to define their population and sample.
    • The population that the researcher has access to, and actually investigates, is defined as the accessible population or study population.

    Elements

    • An element is the unit or case about which information is obtained.
    • Elements may be people, objects, events, social groups, organizations, documents, or provinces.
    • All elements together constitute the population.

    Sampling Frame

    • A sampling frame is not always available.
    • The researcher often has to prepare a sampling frame, which contains a complete target population.
    • An adequate sampling frame should not exclude any element of the population.

    Representative Sample

    • A representative sample is a sample that resembles the population in as many ways as possible.
    • It allows the researcher to accurately generalize the results.
    • A representative sample should replicate the population properties in approximately the same proportion as they occur in the target population.

    Sampling Error

    • Sampling error occurs when a sample does not properly represent the population.
    • This can introduce serious bias, as certain elements in the population may be overrepresented or underrepresented.

    Quota Sampling

    • Quota sampling is a nonprobability sampling technique.
    • It requires each stratum to be represented in the sample in the same proportion as in the total population.
    • The sampling procedure in quota sampling relies on convenience or accidental choice, rather than random choice from a sample frame.

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    Quiz Team

    Description

    Learn about the importance of selecting a sample in research methodology. Understand how to choose a representative group from a large population.

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