Sampling and Data Collection

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What is a population in research?

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The total group of people or entities from whom information is required for a study.

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What are population parameters?

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The characteristics of a population, including its nature, size, and unique traits.

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What is the difference between target population and accessible population?

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Target population includes everyone that falls within the population parameters, while accessible population is the section of the target population that can actually be included in the study.

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What is a sample in research?

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A subset of a population that is representative of the whole population.

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What is sampling error?

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An indication of how confident we are that a percentage will generate the same answer as the entire population.

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What is probability sampling?

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A sampling method where each unit has an equal chance of being chosen, often used in quantitative studies to reduce bias.

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What is simple random sampling?

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The most basic type of probability sampling where each element has the same chance of being selected.

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What is systematic sampling?

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A method where each element in the sampling frame is numbered and selected using a sampling interval.

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What is stratified sampling?

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Dividing the population into smaller groups (strata) based on characteristics and drawing samples from each strata.

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What is multi-stage cluster sampling?

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A method used when the population is widespread, narrowing down the population from one cluster to the next.