AP Statistics Unit 3 Review Questions

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What is a systematic sample?

Back

A sampling method where every nth individual is selected from a list or queue.

Tags

CCSS.HSS.IC.B.3

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What is a stratified sample?

Back

A sampling method where the population is divided into subgroups (strata) and random samples are taken from each stratum.

Tags

CCSS.HSS.IC.B.3

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What is a completely randomized design in experiments?

Back

An experimental design where all subjects are randomly assigned to different treatment groups.

Tags

CCSS.HSS.IC.B.3

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What is a matched pairs design?

Back

An experimental design where subjects are paired based on similar characteristics, and each pair is assigned to different treatments.

Tags

CCSS.HSS.IC.B.3

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What is a convenience sample?

Back

A sampling method that involves selecting individuals who are easiest to reach.

Tags

CCSS.HSS.IC.A.1

CCSS.7.SP.A.1

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What is a cluster sample?

Back

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

Tags

CCSS.HSS.IC.B.3

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Define confounding variables in statistics.

Back

Extraneous variables that affect the relationship between the independent and dependent variables.

Tags

CCSS.HSS.IC.B.3

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What is the impact of confounding variables on data collection?

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They can lead to incorrect conclusions about the relationship between variables.

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What is a simple random sample?

Back

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

Tags

CCSS.HSS.IC.B.3

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What is the purpose of randomization in experiments?

Back

To eliminate bias and ensure that the treatment groups are comparable.

Tags

CCSS.HSS.IC.B.3