Sampling Techniques

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What is Sampling?

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Sampling is the process of selecting a subset of individuals from a population to estimate characteristics of the whole population.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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What is Simple Random Sampling?

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Simple Random Sampling is a sampling technique where every individual has an equal chance of being selected.

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CCSS.HSS.IC.B.3

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What is Systematic Sampling?

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Systematic Sampling involves selecting every nth individual from a list or sequence after a random starting point.

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

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What is Stratified Sampling?

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Stratified Sampling involves dividing the population into subgroups (strata) and randomly sampling from each stratum.

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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-probability sampling technique where samples are taken from a group that is easily accessible.

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CCSS.HSS.IC.B.3

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Example of Simple Random Sampling.

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A teacher randomly selects 10 students from a class of 30 by drawing names from a hat.

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CCSS.HSS.IC.B.3

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Example of Systematic Sampling.

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A researcher selects every 5th person from a list of registered voters.

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CCSS.HSS.IC.B.3

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Example of Cluster Sampling.

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A survey is conducted in 3 randomly selected classrooms out of 10 in a school.

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Example of Stratified Sampling.

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A researcher divides a population into age groups and randomly samples individuals from each age group.

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CCSS.HSS.IC.B.3