Statistical Data Sets

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What is data?

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The factual information collected from a survey or other source.

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What is statistics?

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The science of collecting and analysing data.

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What is a sample?

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A subgroup chosen from a population.

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What is a population in statistics?

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The entire group of individuals or instances about whom we hope to learn.

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What is a variable?

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An element or feature that can vary among subjects in a study.

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What is descriptive statistics?

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A branch of statistics that summarizes and describes the features of a data set.

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What is inferential statistics?

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A branch of statistics that makes inferences and predictions about a population based on a sample.

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What is a random sample?

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A sample that is selected from a population in such a way that every individual has an equal chance of being chosen.

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What is a survey?

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A method of collecting data by asking questions to a group of people.

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What is a census?

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A survey that attempts to collect data from every member of a population.