8.1 Practice Problems

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What is a Sample Survey?

Back

A Sample Survey is a research method where a subset of a population is selected to gather information about the entire population's preferences or behaviors.

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What is a Census?

Back

A Census is a research method that involves collecting data from every member of a population.

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What is an Observational Study?

Back

An Observational Study is a research method where the researcher observes subjects in their natural environment without intervention.

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What is an Experimental Study?

Back

An Experimental Study is a research method where the researcher manipulates one variable to determine its effect on another variable.

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.

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What is a Population in research?

Back

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

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What is a Sample in research?

Back

A Sample is a subset of a population selected for observation and analysis.

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What is the difference between a Population and a Sample?

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A Population includes all members of a defined group, while a Sample includes only a portion of that group.

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What is Bias in sampling?

Back

Bias in sampling occurs when certain members of the population are more likely to be selected than others, leading to an unrepresentative sample.

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What is the purpose of Random Selection in research?

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Random Selection ensures that every member of the population has an equal chance of being chosen, reducing bias.