Sampling Methods and Types of Bias

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What is Systematic Random Sampling?

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A sampling method where every nth individual is selected from a list or queue, ensuring a systematic approach to sampling.

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What is Convenience Sampling?

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A sampling method where individuals are selected based on their easy availability and proximity to the researcher.

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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, often achieved through random number generation.

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What is Voluntary Response Bias?

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A bias that occurs when individuals choose to respond to a survey, often leading to an overrepresentation of strong opinions.

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What is Response Bias?

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A bias that occurs when respondents provide inaccurate answers due to misunderstanding, misinterpretation, or social desirability.

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What is Non-Response Bias?

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A bias that occurs when certain individuals selected for a survey do not respond, potentially skewing the results.

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What is Undercoverage Bias?

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A bias that occurs when some members of the population are inadequately represented in the sample.

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What is Stratified Random Sampling?

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A sampling method that involves dividing the population into subgroups (strata) and randomly sampling from each stratum.

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What is the purpose of using sampling methods?

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

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How does Systematic Random Sampling differ from Simple Random Sampling?

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Systematic Random Sampling selects individuals at regular intervals, while Simple Random Sampling selects individuals completely at random.