Statistics Vocabulary

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Bias

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When only one group is selected to answer a question and there is favoritism, leading to incorrect conclusions about the population based on the sample.

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Biased Sampling

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When a sample is not representative of the larger population and favors one or more parts of the population.

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Statistical Question

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A question that can be answered with data.

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Population

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An entire population of people, animals, plants, or objects from which data can be collected.

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Voluntary Response Sample

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When a sample involves only the people who want to participate.

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Sample

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A subset of a population used to represent the whole population.

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Unbiased Sampling

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A sampling method that gives all individuals in the population an equal chance of being selected.

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Inferential Statistic

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A statistic that allows us to make inferences or generalizations about a population based on a sample.

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Random Sample

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A sample that is selected randomly from the population, ensuring that every individual has an equal chance of being chosen.

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Convenience Sample

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A sample that is taken from a group that is easy to reach.