Elementary Statistics Unit 2: Data Collection & Sampling
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Questions and Answers

What is the main characteristic of Snowball Sampling?

  • Research participants recruit other members for the study. (correct)
  • Participants are selected based on specific criteria.
  • Participants are randomly selected from the population.
  • Researchers select participants who are easily accessible.

    • When is Snowball Sampling particularly useful?

  • When participants are easily accessible.
  • When participants might be hard to find. (correct)
  • When participants are randomly selected.
  • When participants belong to a specific demographic.

    • Which sampling technique involves selecting participants based on a specific characteristic or trait?

  • Simple Random Sampling
  • Convenience Sampling
  • Cluster Sampling
  • Stratified Sampling (correct)

    • What differentiates Systematic Sampling from Simple Random Sampling?

    <p>Systematic Sampling involves selecting participants at regular intervals.</p> Signup and view all the answers

    In which sampling technique do researchers select participants purely based on their availability and accessibility?

    <p>Convenience Sampling</p> Signup and view all the answers

    What is a key advantage of Simple Random Sampling?

    <p>It ensures representation of various population segments.</p> Signup and view all the answers

    What is the main drawback of convenience sampling?

    <p>It lacks objectivity</p> Signup and view all the answers

    What is the key characteristic of quota sampling?

    <p>Determination of proportions for subgroups in the population</p> Signup and view all the answers

    What is the basis for selecting respondents in purposive sampling?

    <p>Satisfaction of specific criteria</p> Signup and view all the answers

    Why might a researcher choose convenience sampling?

    <p>For ease and convenience</p> Signup and view all the answers

    Which sampling method involves drawing a sample that mirrors the proportions of subgroups in the population?

    <p>Quota Sampling</p> Signup and view all the answers

    What distinguishes purposive sampling from other sampling methods?

    <p>Selection based on specific criteria set by researchers</p> Signup and view all the answers

    What is the primary focus of Statistics as discussed in the text?

    <p>Collection, presentation, analysis, and interpretation of data</p> Signup and view all the answers

    Why is it important to determine a sample size in a population?

    <p>To ensure the study is representative of the population</p> Signup and view all the answers

    What is the significance of learning different sampling techniques?

    <p>To gather data more effectively and choose samples scientifically</p> Signup and view all the answers

    Which of the following is NOT a reason for learning both probability and non-probability sampling techniques?

    <p>To choose samples randomly</p> Signup and view all the answers

    What is the key learning outcome related to data collection methods in this unit?

    <p>Identifying types of data collection methods for researches</p> Signup and view all the answers

    Why is it necessary to apply the appropriate sampling technique during data collection?

    <p>To guarantee the representativeness of the sample collected</p> Signup and view all the answers

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