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Question Tell whether the following statement is true or false: The aggregate of cases in which a researcher is interested is called a sample.
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Answer False The aggregate of cases in which a researcher is interested is called a population. A sample is selection of a portion of the population to represent the entire population.
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Basic Sampling Concepts in Quantitative Studies Population: the aggregate of cases in which a researcher is interested Sampling: selection of a portion of the population (a sample) to represent the …
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Eligibility Criteria Establish population characteristics Determine participation in study Maximize construct validity Inclusion Exclusion
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Question Tell whether the following statement is true or false: Researchers usually sample from the target population.
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Answer False Researchers usually sample from the accessible population but should identify the target population to which they want to generalize their results.
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Basic Sampling Concepts in Quantitative Studies Representative sample A sample whose key characteristics closely approximate those of the population Sampling bias The systematic over- or …
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Question Tell whether the following statement is true or false: Probability sampling involves random selection of elements.
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Answer True Probability sampling involves random selection of elements.
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Basic Sampling Concepts in Quantitative Studies (cont. ) Probability sampling Involves random selection of elements Nonprobability sampling Does not involve selection of elements at random
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Nonprobability Sampling Convenience sampling Snowball sampling Quota sampling Consecutive sampling Purposive sampling
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Probability Sampling Simple random sampling Stratified random sampling Multistage sampling Cluster sampling Systematic sampling
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Power Analysis Estimate sample size Large samples preferred to small samples
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