Checkpoint: Sampling Methods

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What is Simple Random Sampling?

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A sampling method where every individual has an equal chance of being selected. Example: Drawing names from a jar.

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What is Systematic Sampling?

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A sampling method where every nth individual is selected from a list. Example: Calling every 6th person in a phone book.

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What is Voluntary Sampling?

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A sampling method where individuals choose to participate. Example: A news station asking viewers to share their opinions.

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What is Convenience Sampling?

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A sampling method where individuals are selected based on ease of access. Example: Asking a few students in a class.

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What is the definition of a Sample in research?

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A subset of individuals selected from a larger population for the purpose of research.

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What is the difference between a Sample and a Population?

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A sample is a smaller group selected from a population, which is the entire group of interest.

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What is Cluster Sampling?

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A sampling method where the population is divided into clusters, and entire clusters are randomly selected. Example: Selecting entire classrooms for a survey.

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What is Stratified Sampling?

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A sampling method where the population is divided into subgroups (strata) and random samples are taken from each. Example: Sampling students from different grades.

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What is the purpose of Sampling in research?

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To gather data and make inferences about a larger population without surveying everyone.

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What is Bias in Sampling?

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A systematic error that leads to an unrepresentative sample. Example: Only surveying people at a specific event.