Statistics Vocabulary

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What is a convenience sample?

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A convenience sample is a type of non-probability sampling where the sample is taken from a group that is easy to reach.

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What is a representative sample?

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A representative sample accurately reflects the characteristics of the population from which it is drawn.

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What is a simple random sample?

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A simple random sample is a subset of individuals chosen from a larger set, where each individual has an equal chance of being selected.

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What is a systematic sample?

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A systematic sample is obtained by selecting every nth individual from a list or queue.

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What is a voluntary sample?

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A voluntary sample consists of individuals who choose to participate in a study, often leading to bias.

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Why is it important for a sample to be representative?

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A representative sample ensures that the results of a study can be generalized to the larger population.

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What is sampling bias?

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Sampling bias occurs when certain members of the population are systematically more likely to be selected than others.

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What is the difference between qualitative and quantitative data?

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Qualitative data describes characteristics or qualities, while quantitative data involves numerical measurements.

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What is the purpose of using a sample in statistics?

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Using a sample allows researchers to make inferences about a larger population without surveying every individual.

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What is the role of randomization in sampling?

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Randomization helps to eliminate bias and ensures that every individual has an equal chance of being selected.