Types of Sampling

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What is stratified sampling?

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A sampling technique where the population is divided into non-overlapping groups called 'strata', and samples are drawn from each stratum.

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What is probability sampling?

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A sampling technique that uses randomization to select samples, ensuring that every member of the population has a known chance of being included.

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What is snowball sampling?

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A non-probability sampling technique used when the population is unknown or rare, where existing study subjects recruit future subjects from among their acquaintances.

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What is convenience sampling?

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A sampling technique that involves selecting individuals who are easiest to reach, allowing for quick and easy data collection.

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What is non-probability sampling?

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A sampling technique that does not rely on randomization, meaning not all members of the population have a chance of being selected.

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What is cluster sampling?

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A sampling technique where the population is divided into clusters (usually geographically), and entire clusters are randomly selected.

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What is systematic sampling?

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A sampling method where you select every nth individual from a list of the population after a random starting point.

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What is quota sampling?

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A non-probability sampling technique where the researcher ensures equal representation of various subgroups in the sample.

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What is purposive sampling?

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A non-probability sampling technique where the researcher selects individuals based on specific characteristics or criteria.

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What is the main difference between probability and non-probability sampling?

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Probability sampling relies on randomization, while non-probability sampling does not.