Collecting Statistical Data

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What is a simple random sample?

Back

A sample where every member of the population has an equal chance of being selected.

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What is a convenience sample?

Back

A sample taken from a group that is easy to reach or access.

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What is sample bias?

Back

An error that occurs when a sample does not accurately represent the population.

Front

What is a sample?

Back

A subgroup chosen from a population for the purpose of statistical analysis.

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What is sample size?

Back

The number of observations or data points in a sample.

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What is a population in statistics?

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The entire group of individuals or instances about whom we hope to learn.

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What is a parameter?

Back

A numerical characteristic or measure obtained by using all the data from a population.

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What is a statistic?

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A numerical characteristic or measure obtained by using data from a sample.

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What is a stratified sample?

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A sample that is divided into subgroups (strata) and random samples are taken from each stratum.

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What is a cluster sample?

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A sampling method where the population is divided into clusters, and entire clusters are randomly selected.