Unit 4 Review

Front

What is a lurking variable?

Back

A variable that helps to explain the association between the conditions or treatments and the response, but is not the explanation that the study was designed to test.

Front

What is a cluster sample?

Back

Units of the population are grouped; one or more groups are selected at random, and all units of that group are included in the sample.

Front

What is a voluntary response sample?

Back

A sampling method where individuals select themselves to participate, often leading to biased results.

Front

What is an observational study?

Back

A study where the researcher observes the subjects without manipulating any variables.

Front

What is an experiment?

Back

A study where the researcher has control over the environment and manipulates one or more variables to observe the effect.

Front

What is a response variable?

Back

The variable that measures the outcome of a study, which is affected by the independent variable.

Front

What is a treatment in an experiment?

Back

The specific condition applied to the subjects in an experiment.

Front

What is a simple random sample?

Back

A sampling method where every member of the population has an equal chance of being selected.

Front

What is a systematic sample?

Back

A sampling method where every nth member of the population is selected.

Front

What is stratified sampling?

Back

A sampling method where the population is divided into subgroups, and random samples are taken from each subgroup.