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The data are necessary as inputs to the analysis, which is specified based upon the requirements of those directing the analysis or customers (who will use the finished product of the analysis). The general type of entity upon which the data will be collected is referred to as an experimental unit (e.g., a person or population of people). Specific variables regarding a population (e.g., age and income) may be specified and obtained.  Data may be numerical or categorical (i.e., a text label for numbers).

The data are necessary as inputs to the analysis, which is specified based upon the requirements of those directing the analysis or customers (who will use the finished product of the analysis). The general type of entity upon which the data will be collected is referred to as an experimental unit (e.g., a person or population of people). Specific variables regarding a population (e.g., age and income) may be specified and obtained.  Data may be numerical or categorical (i.e., a text label for numbers).

作为分析的输入数据，是很必要的，因为分析是基于指导分析的人或客户的需求（这些人将使用分析的最终产品）而规定的。收集数据的一般实体类型称为试验单位(例如，一个人或一群人)。关于<font color = '#ff8000'>总体population</font>的具体变量（例如，年龄和收入）可以被指定和获得。数据可以是数字型的或分类的(也就是数字的文本标签)。

用以分析的输入数据是很必要的，因为分析是基于指导分析的人或客户的需求（这些人将使用分析的最终产品）而规定的。收集数据的一般实体类型称为试验单位(例如，一个人或一群人)。关于<font color = '#ff8000'>总体population</font>的具体变量（例如，年龄和收入）可以被指定和获得。数据可以是数字型的或分类的(也就是数字的文本标签)。

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.