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The process of organizing data into distinct categories or segments based on shared characteristics or criteria.
研究人员将调查数据按年龄段进行数据分组，以分析不同年龄群体的消费习惯。
Researchers grouped the survey data by age brackets to analyze consumption habits across different age groups.
Commonly used in database management, statistical analysis, and machine learning preprocessing.
In technical writing, specify the grouping criteria (e.g., '按地区分组' for 'grouped by region') to clarify the method.
Use data grouping when analyzing distributions, creating visualizations, or preparing data for modeling. Avoid over-grouping which may obscure meaningful patterns.
组合词：数据 (data) + 分组 (grouping). The term emerged with the development of statistical software and database systems in the late 20th century.
In Chinese technical contexts, this term is often used interchangeably with '分组' (fēnzǔ) when the data context is clear. The full form '数据分组' is preferred in formal documentation.