In this paper, we introduce the data analysis used in quality management and the procedure and method for constructing the frequency histogram through the practical examples.
本文结合实例介绍了质量管理中进行数据分析、建立频数直方图的步骤和方法。
The common frequency histogram method is not applicable to analyze the small sample data, because it is sensitive to the analysis parameters such as the starting point and the interval step.