STAT 152 Flashcard 1

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What is quantitative data?

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Information given in numbers that can be counted or measured.

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What is a simple random sample?

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A sampling method where each member of a population has an equal chance of being selected, often using random-number tables.

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What is the population in a survey?

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The entire group of individuals that a study aims to understand, such as all adults in the U.S.

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What is stratified 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 does statistical significance mean?

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A result that is unlikely to occur by chance, indicating that the findings are meaningful.

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What is qualitative data?

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Information that cannot be measured numerically, often descriptive in nature.

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What is systematic sampling?

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

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What is a cluster sample?

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

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What is the difference between a sample and a population?

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

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What is a biased sample?

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A sample that does not accurately represent the population, leading to skewed results.