Mathematics in the Modern World: Data Management

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What is Statistics?

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Statistics deals with collection, classification, analysis, and interpretation of numerical facts (data) that can be used to draw valid conclusions.

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What is Descriptive Statistics?

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Descriptive statistics involves collection and classification of data.

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What is Inferential Statistics?

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Inferential statistics involves analysis and interpretation of data.

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Define Population in statistics.

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Population is the set of measurements corresponding to the entire collection of units about which the information is sought.

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What is a Sample?

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A sample is a set of measurements that is collected in the course of investigation.

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What is a Variable?

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A variable is a particular characteristic of the object or individual.

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What is a Quantitative Variable?

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A quantitative variable is a numerical measurement for which operations can be applied, e.g., age, height, weight.

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What is a Qualitative Variable?

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A qualitative variable describes an object by placing it into a category or group, e.g., gender, nationality.

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What is a Discrete Variable?

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A discrete variable is expressed only in countable numbers, e.g., number of people in a household.

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What is a Continuous Variable?

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A continuous variable can potentially take on an infinite number of values, e.g., speed in km/h.