Front

What is a survey?

Back

A survey is a method of collecting data by asking people questions to gather their opinions, behaviors, or characteristics.

Front

What is an experiment?

Back

An experiment is a research method where a researcher manipulates one or more variables to observe the effect on another variable, often involving a control group.

Front

What is random sampling?

Back

Random sampling is a technique where every individual in a population has an equal chance of being selected for the survey, ensuring unbiased results.

Tags

CCSS.HSS.IC.B.3

Front

What is biased sampling?

Back

Biased sampling occurs when certain members of a 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 voluntary response bias?

Back

Voluntary response bias happens when individuals choose to participate in a survey, often leading to an overrepresentation of strong opinions.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is undercoverage in sampling?

Back

Undercoverage occurs when some members of the population are inadequately represented in the sample, leading to incomplete data.

Tags

CCSS.HSS.IC.B.3

Front

What is a stratified sample?

Back

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

Tags

CCSS.HSS.IC.B.3

Front

What is a cluster sample?

Back

A cluster sample involves dividing the population into clusters (often geographically) and then randomly selecting entire clusters for the survey.

Tags

CCSS.HSS.IC.B.3

Front

What is an observational study?

Back

An observational study is a research method where the researcher observes subjects without manipulating any variables, often to identify correlations.

Tags

CCSS.RI.11-12.7

CCSS.RI.8.7

CCSS.RI.9-10.7

CCSS.RL.11-12.7

CCSS.RL.9-10.7

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 against the experimental group.