利用控制图方法进一步定量分析物价运行规律

Analyze price further using method of the Schwart Chart

利用控制图方法分析物价 ,画出休哈特控制图 ,利用 3σ原则直观地判断 Y″序列中是否存在不规则变动 (Ct)的影响 ,并利用指数权重移动平均图与累积和图 ,它能充分利用数据信息 ,有效地检测出序列均值与方差较小的变化。

In this paper,the Schwart Chart is used in analysis of price The Schwart Chart for Y t″ is ploted directly to detect the change of Y t″ by using 3 σ principle The Exponential Weighted Movings Average Chart and Cusum Chart are also be used to detect the mean and variations little change,so the message can be used abundantly