Sampling Methods in Statistics

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What is a Sample in Statistics?

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A sample is a small portion of the population used to gather data from.

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What is a Population in Statistics?

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

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What is a Census?

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A census is a method of data collection that involves gathering information from every member of the population.

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What is a Biased Sample?

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A biased sample is one that does not accurately represent the population, leading to skewed results.

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What is a Random Sample?

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A random sample is a subset of individuals chosen from a larger set, where each individual has an equal chance of being selected.

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What is a Simple Random Sample?

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A simple random sample is a sampling method where every member of the population has an equal chance of being selected.

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What is a Cluster Random Sample?

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A cluster random sample involves dividing the population into clusters (groups) and then randomly selecting entire clusters to survey.

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What is a Stratified Random Sample?

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A stratified random sample involves dividing the population into subgroups (strata) and then randomly sampling from each stratum.

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What is Systematic Random Sampling?

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Systematic random sampling involves selecting every nth individual from a list or sequence.

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What is Voluntary Response Sampling?

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Voluntary response sampling involves individuals choosing to participate in a survey, often leading to biased results.