Baker - Types of Samples

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What is a parameter in statistics?

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A parameter is a numerical value that summarizes a characteristic of a population.

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What is a statistic in statistics?

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A statistic is a numerical value that summarizes a characteristic of a sample.

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What is simple random sampling?

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

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What is cluster random sampling?

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

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What is stratified random sampling?

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A sampling method where the population is divided into subgroups (strata) and random samples are taken from each stratum.

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What is systematic random sampling?

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A sampling method where members of the population are selected at regular intervals.

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Example of simple random sampling.

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Selecting names from a hat where each name has an equal chance of being drawn.

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Example of cluster random sampling.

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Choosing 5 out of 20 neighborhoods and surveying all households in those neighborhoods.

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Example of stratified random sampling.

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Dividing a class into boys and girls, then randomly selecting students from each group.

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Example of systematic random sampling.

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Selecting every 10th person from a list of registered voters.