7B Flashcard Review

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What is an Observational Study?

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An Observational Study is a type of research where the researcher observes subjects in their natural environment without manipulation or intervention.

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What is Systematic Sampling?

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Systematic Sampling is a sampling method where every nth individual is selected from a list or sequence.

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What is Stratified Sampling?

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Stratified Sampling is a method where the population is divided into subgroups (strata) and random samples are taken from each stratum.

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What is Cluster Random Sampling?

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Cluster Random Sampling involves dividing the population into clusters (usually geographically) and then randomly selecting entire clusters to survey.

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What is a Sample Survey?

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A Sample Survey is a study that collects data from a subset of a population to make inferences about the entire population.

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What is a Census?

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A Census is a complete enumeration of a population, collecting data from every individual.

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What is the difference between an Experiment and an Observational Study?

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An Experiment involves manipulation of variables to determine cause-and-effect relationships, while an Observational Study does not involve manipulation.

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What is Convenience Sampling?

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Convenience Sampling is a non-probability sampling method where samples are taken from a group that is easily accessible.

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What is the purpose of using a control group in an experiment?

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A control group is used to compare against the experimental group to determine the effect of the independent variable.

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What is a variable in research?

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A variable is any factor, trait, or condition that can exist in differing amounts or types.