Chapter 4: Data Collection Review

Front

What is the definition of an Observational Study?

Back

An Observational Study is a type of research where the researcher observes subjects in their natural environment without manipulating any variables.

Front

What is the purpose of a Control Group in an experiment?

Back

A Control Group is used as a baseline to compare the effects of the treatment in an experiment. It does not receive the treatment.

Front

What does the term 'Placebo Effect' refer to?

Back

The Placebo Effect refers to the phenomenon where subjects experience a perceived improvement in their condition simply because they believe they are receiving treatment, even if it is inactive.

Front

What is Undercoverage in survey sampling?

Back

Undercoverage occurs when some groups in the population are left out of the selection process, leading to biased results.

Front

What is the difference between a Survey and an Experiment?

Back

A Survey collects data through questions to understand opinions or behaviors, while an Experiment tests a hypothesis by manipulating variables to observe effects.

Front

What is Random Assignment in experiments?

Back

Random Assignment is the process of randomly assigning participants to different groups in an experiment to ensure each group is similar at the start.

Front

What is Response Bias?

Back

Response Bias occurs when participants provide inaccurate or false responses, often due to the way questions are asked.

Front

What is the definition of a Population in research?

Back

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

Front

What is the purpose of a Sample in research?

Back

A Sample is a subset of the population selected for study, used to make inferences about the entire population.

Front

What is Convenience Sampling?

Back

Convenience Sampling is a non-probability sampling method where subjects are selected based on their easy availability and proximity to the researcher.