Population and Sample

Front

What is the definition of a population in statistics?

Back

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

Front

What is a sample in statistics?

Back

A sample is a subset of the population that is used to represent the entire group.

Front

What is the difference between a population and a sample?

Back

A population includes all members of a specified group, while a sample consists of a portion of that group.

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What is a sampling method?

Back

A sampling method is a process used to select a sample from a population.

Front

What is random sampling?

Back

Random sampling is a technique where each member of the population has an equal chance of being selected.

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What is stratified sampling?

Back

Stratified sampling involves dividing the population into subgroups and taking a sample from each subgroup.

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What is convenience sampling?

Back

Convenience sampling is a non-probability sampling technique where samples are taken from a group that is easily accessible.

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What is the purpose of surveying a sample?

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The purpose of surveying a sample is to make inferences about the population without surveying every individual.

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What is a parameter in statistics?

Back

A parameter is a numerical characteristic of a population, such as a mean or standard deviation.

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What is a statistic in statistics?

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A statistic is a numerical characteristic of a sample, used to estimate a population parameter.