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第159行：
第159行： − 一开始获得的数据必须经过处理整合以便进行分析。，以电子表格或统计软件为例，这可能涉及到将数据以表格格式放置到行和列中（即结构化数据）以便后续分析。+ − −
→Data processing 数据处理
Data initially obtained must be processed or organised for analysis. For instance, these may involve placing data into rows and columns in a table format (i.e., structured data) for further analysis, such as within a spreadsheet or statistical software.
Data initially obtained must be processed or organised for analysis. For instance, these may involve placing data into rows and columns in a table format (i.e., structured data) for further analysis, such as within a spreadsheet or statistical software.
一开始获得的数据必须经过处理整合以便进行分析。以电子表格或统计软件为例，这可能涉及到将数据以表格格式放置到行和列中（即结构化数据）以便后续分析。
===Data cleaning 数据清理===
===Data cleaning 数据清理===