AP Statistics Unit 3 Review Questions

Front

What is a systematic sample?

Back

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

Front

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.

Front

What is a completely randomized design in experiments?

Back

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

Front

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.

Front

What is a convenience sample?

Back

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

Front

What is a cluster sample?

Back

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

Front

Define confounding variables in statistics.

Back

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

Front

What is the impact of confounding variables on data collection?

Back

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

Front

What is a simple random sample?

Back

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

Front

What is the purpose of randomization in experiments?

Back

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