Sampling Methods and Types of Bias

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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 a Census?

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A method of data collection where information is gathered from every member of the population.

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What is Undercoverage?

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

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What is Response Bias?

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A bias that occurs when respondents provide inaccurate answers due to various factors, such as misunderstanding the question.

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What is Nonresponse Bias?

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A bias that occurs when individuals selected for the sample do not respond, leading to a potential misrepresentation of the population.

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What is Voluntary Response Bias?

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A bias that occurs when individuals choose to participate in a survey or study, often leading to a non-representative sample.

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What is Simple Random Sampling?

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A sampling method where every individual in the population has an equal chance of being selected.

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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 selecting samples from each stratum.

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What is Cluster Random Sampling?

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A sampling method where the population is divided into clusters, and entire clusters are randomly selected for the sample.

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What is Systematic Random Sampling?

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A sampling method where individuals are selected at regular intervals from a randomly ordered list.