Front

What is the main difference between surveys and experiments?

Back

Surveys collect data through questionnaires or interviews, while experiments manipulate variables to observe effects.

Front

Define 'Population' in the context of surveys and experiments.

Back

Population refers to the entire group of individuals or instances about whom we hope to learn.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is a sample in research?

Back

A sample is a subset of the population selected for participation in a study.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is stratified sampling?

Back

Stratified sampling involves dividing the population into subgroups and randomly selecting samples from each subgroup.

Tags

CCSS.HSS.IC.B.3

Front

What is cluster sampling?

Back

Cluster sampling involves dividing the population into clusters (often geographically) and randomly selecting entire clusters for the study.

Tags

CCSS.HSS.IC.B.3

Front

What does biased sampling mean?

Back

Biased sampling occurs when certain members of the population are more likely to be selected than others, leading to skewed results.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is an observational study?

Back

An observational study is a type of research where the researcher observes and records behavior without manipulating any variables.

Tags

CCSS.HSS.IC.B.3

Front

What is an experimental study?

Back

An experimental study involves manipulating one or more variables to determine their effect on a dependent variable.

Front

What is the purpose of random assignment in experiments?

Back

Random assignment helps ensure that each participant has an equal chance of being assigned to any group, reducing bias.

Tags

CCSS.HSS.IC.B.3

Front

What is a control group?

Back

A control group is a group in an experiment that does not receive the treatment or intervention, used for comparison.