Module 3 Practice Questions

Front

What is a random sample?

Back

A random sample is a subset of individuals chosen from a larger population in such a way that every individual has an equal chance of being selected.

Front

What is convenience sampling?

Back

Convenience sampling is a non-probability sampling technique where subjects are selected because of their convenient accessibility and proximity to the researcher.

Front

What is the definition of a population in statistics?

Back

In statistics, a population refers to the entire group of individuals or instances about whom we hope to learn.

Front

What does it mean for an experiment to be blind?

Back

A blind experiment is one in which the participants do not know whether they are receiving the treatment or a placebo, reducing bias in the results.

Front

What is a survey in research?

Back

A survey is a method of gathering information from individuals, typically by asking questions to collect data on opinions, behaviors, or characteristics.

Front

What is the difference between a sample and a population?

Back

A sample is a subset of a population, selected for the purpose of conducting a study, while a population includes all members of a specified group.

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What is biased sampling?

Back

Biased sampling occurs when the sample selected does not accurately represent the population, leading to skewed results.

Front

What is the purpose of randomization in experiments?

Back

Randomization helps to eliminate bias by ensuring that each participant has an equal chance of being assigned to any group in the study.

Front

What is an observational study?

Back

An observational study is a type of research where the investigator observes subjects and measures variables of interest without assigning treatments.

Front

What is the significance of control groups in experiments?

Back

Control groups are used as a benchmark to measure how the other tested subjects do, helping to isolate the effect of the treatment.