Infinite Population Perspective in Sampling
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Questions and Answers

What defines a probability sample?

  • The sampling plan is not based on distinct samples.
  • Each element in the population has an equal probability of being included in the sample.
  • The sampling units that belong to each possible sample can be specified. (correct)
  • Each element in the population has an unknown probability of being included in the sample.

    • Which property is characteristic of probability sampling?

  • Unique estimates for each sample. (correct)
  • Unknown probabilities of selection for each element.
  • Random selection process using unspecified probabilities.
  • Inclusion of nonprobability samples.

    • How is a nonprobability sample defined?

  • The sampling plan does not give every element a nonzero probability of inclusion. (correct)
  • Every element in the population has an equal chance of selection.
  • Each element has a known, nonzero probability of being included.
  • Each possible sample has a known probability of selection.

    • What is a characteristic of model-assisted methods in sampling?

    <p>They combine design-based inference with a model.</p> Signup and view all the answers

    In probability sampling, what is assigned to each possible sample?

    <p>Known probability of selection.</p> Signup and view all the answers

    How many distinct samples are there in Example 1.9 for the sample selection procedure?

    <p>3</p> Signup and view all the answers

    "Model-assisted methods" refer to:

    <p>&quot;Model-based inference to complement design-based inference.&quot;</p> Signup and view all the answers

    "Basic Concepts" discusses:

    <p>&quot;Probability vs Non-probability Sampling.&quot;</p> Signup and view all the answers

    "Model-assisted methods" may be used to:

    <p>&quot;Enhance design-based inference by utilizing models.&quot;</p> Signup and view all the answers

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