Chapter 10: Sampling

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What is sampling?

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Sampling is the process of selecting a subset of individuals or items from a larger population to estimate characteristics of the whole population.

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What is a simple random sample?

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

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What is biased sampling?

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Biased sampling occurs when certain individuals or groups in a population are more likely to be selected than others, leading to an inaccurate representation.

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What is a census?

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A census is the process of collecting data from every individual in the entire population.

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What is stratified sampling?

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Stratified sampling is a method where the population is divided into subgroups (strata) based on shared characteristics, and samples are taken from each stratum.

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What is systematic sampling?

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Systematic sampling is a method where you select every nth individual from a list or sequence after a random starting point.

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What is cluster sampling?

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Cluster sampling involves dividing the population into clusters (groups) and then randomly selecting entire clusters to sample.

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What is voluntary response sampling?

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Voluntary response sampling is a method where individuals choose to participate in a survey or study, often leading to biased results.

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What is the difference between a sample and a population?

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A sample is a subset of individuals selected from a population, which is the entire group of individuals or items being studied.

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What is the purpose of sampling in research?

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The purpose of sampling is to gather data and make inferences about a population without needing to study every individual.