Statistics Vocabulary

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What is a population parameter?

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A population parameter is a value that describes a characteristic of an entire population, such as the mean or proportion.

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What is a sample statistic?

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A sample statistic is a value that describes a characteristic of a sample taken from a population, used to estimate the population parameter.

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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) and random samples are taken from each stratum.

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What is cluster sampling?

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Cluster sampling is a method where the population is divided into clusters, and entire clusters are randomly selected to be included in the sample.

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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.

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What is simple random sampling?

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Simple random sampling is a method where every individual in the population has an equal chance of being selected.

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What is an experimental research method?

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An experimental research method involves manipulating one variable to determine if it causes a change in another variable.

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What is observational research?

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Observational research involves watching and recording behavior without manipulating any variables.

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What is the difference between a population and a sample?

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A population includes all members of a defined group, while a sample is a subset of the population used for analysis.

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What is a variable in statistics?

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A variable is any characteristic, number, or quantity that can be measured or counted.