**Data - Wikipedia**
https://en.wikipedia.org/wiki/Data

Data are units of information, often numeric, that are collected through observation. In a more technical sense, data are a set of values of qualitative or quantitative variables about one or more persons or objects, while a datum (singular of data) is a single value of a single variable.. Although the terms "data" and "information" are often used interchangeably, these terms have distinct ...

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