Unit 7A Adv Alg Statistics Review

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What is a biased study?

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A biased study is one that systematically favors certain outcomes or groups over others, leading to inaccurate or misleading results.

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What is an unbiased study?

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An unbiased study is one that fairly represents the population being studied, allowing for accurate and reliable results.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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What is systematic sampling?

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Systematic sampling involves selecting every nth individual from a list or sequence, ensuring a spread across the population.

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CCSS.HSS.IC.B.3

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What is cluster sampling?

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Cluster sampling involves dividing the population into groups (clusters) and randomly selecting entire clusters to survey.

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CCSS.HSS.IC.B.3

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What is simple random sampling?

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Simple random sampling is a method where every individual has an equal chance of being selected, often achieved through random number generation.

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CCSS.HSS.IC.B.3

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What is convenience sampling?

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Convenience sampling involves selecting individuals who are easiest to reach, which may lead to biased results.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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What is voluntary response sampling?

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Voluntary response sampling involves individuals choosing to participate, often leading to self-selection bias.

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CCSS.HSS.IC.B.3

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How do you determine if a study is biased?

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Evaluate the sampling method, representation of the population, and whether certain groups are favored or excluded.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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What is the difference between cluster and stratified sampling?

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Cluster sampling selects entire groups, while stratified sampling divides the population into subgroups and samples from each.

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What is the purpose of random-number tables in sampling?

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Random-number tables are used to ensure that selections are made randomly, reducing bias in the sampling process.