Sampling Methods and Bias

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What is a sampling method?

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A sampling method is a technique used to select individuals or groups from a larger population to participate in a study or survey.

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What is the difference between random sampling and non-random sampling?

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Random sampling involves selecting individuals from a population in such a way that each individual has an equal chance of being chosen, while non-random sampling does not give all individuals an equal chance.

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CCSS.HSS.IC.B.3

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What is cluster sampling?

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Cluster sampling is a sampling method where the population is divided into groups (clusters), and entire clusters are randomly selected for the survey.

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CCSS.HSS.IC.B.3

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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) based on shared characteristics, and random samples are taken from each stratum.

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CCSS.HSS.IC.B.3

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What is bias in sampling?

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Bias in sampling refers to systematic errors that lead to an unrepresentative sample, affecting the validity of the study's conclusions.

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CCSS.HSS.IC.A.1

CCSS.7.SP.A.1

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What is the population in a study?

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The population is the entire group of individuals or instances about whom we hope to learn through our study.

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CCSS.HSS.IC.A.1

CCSS.7.SP.A.1

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What is a sample?

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A sample is a subset of individuals selected from a larger population, used to make inferences about the population.

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CCSS.HSS.IC.A.1

CCSS.7.SP.A.1

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What is the purpose of using random sampling?

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The purpose of using random sampling is to ensure that the sample is representative of the population, reducing bias and allowing for generalization of results.

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CCSS.HSS.IC.B.3

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What is convenience sampling?

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Convenience sampling is a non-random sampling method where individuals are selected based on their easy availability and proximity to the researcher.

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CCSS.HSS.IC.B.3

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What is systematic sampling?

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Systematic sampling is a method where individuals are selected from a population at regular intervals, such as every nth individual.

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CCSS.HSS.IC.B.3