Intro to Statistics

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What is a population in statistics?

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A population is the entire group of individuals or instances about whom we hope to learn.

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What is a sample in statistics?

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A sample is a subset of the population that is used to represent the entire group.

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What is categorical data?

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Categorical data represents characteristics or qualities that can be divided into groups, such as names or labels.

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What is numerical data?

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Numerical data represents quantities and can be measured, such as height, weight, or age.

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What is a parameter in statistics?

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A parameter is a numerical value that summarizes a characteristic of a population.

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What is a statistic in statistics?

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A statistic is a numerical value that summarizes a characteristic of a sample.

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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 specified group, while a sample includes only a part of that group.

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What is the purpose of a survey in statistics?

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A survey is used to collect data from a sample to make inferences about the population.

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What is bias in sampling?

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Bias in sampling occurs when certain members of the population are more likely to be selected than others, leading to an inaccurate representation.

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What is random sampling?

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Random sampling is a technique where each member of the population has an equal chance of being selected.

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