均值-极差(X-R)控制图制程名称制造部门控制规格尺寸81.50 尺寸规格下公差限编号：过 程 信 息 栏数据重要趋势点数最大长度递增趋势递 增 链 数点数最大长度递减趋势80.20递 减 链 数0.00超出控制线点数X 图39480R 图38490项目线体80.3078.40上公差规格中线单位制作下公差上公差限日期审核UCLxUCLr81.051.55AVERxAVERr80.620.73LCLxLCLr统计特性描述样本容量工程规范下限 (LSL)规格中线工程规范上限 (USL)总和读数均值 (X)最大值最小值低于下控制线点数(X)高于上控制线点数(X)极差均值Rd2 （n＝2、3、4、5）能力指数上限(CPU)能力指数下限 (CPL)稳定过程能力指数 (Cp)稳定过程能力指数 (Cpk)能力比率 (CR)标准偏差（n-1)标准偏差 (n)变异 (n-1)变异 (n)性能指数 (PP)性能比率 (PR)性能指数 (Ppk)数 据 值12578.4080.3082.8010077.9180.6281.879.60.000.000.732.332.312.362.342.312.320.330.330.110.112.240.452.222.5080.301.9082.80控制限均值(X-图)81.00 均值80.50 80.00 12345UCLx67LCLx89101112Data ValuesAverage X1314数据点1516171819202122232425正态分布极差(R-图)频数604943401.50 50极差1.00 30200.50 1010005110.00 123R Value00145UCLr67LCLr8910Average R11121314极差值1516171819202122232425正态分布曲线控制图表现：过程能力分析：数据无明显异常，请注意观察其他可能出现的异常情况。过程能力特足！！380.1980.0080.79n123181.0080.7880.65280.7580.8380.67480.6680.7980.94579.9080.9880.56680.5980.8880.73780.9880.4679.80880.5680.6680.78980.6180.6780.901080.5980.8480.001180.4680.5580.941280.7880.9980.261381.8080.3580.461480.6780.8780.911581.0080.7680.771680.8880.7380.431779.8079.6080.601881.2080.6780.731981.0081.0280.722081.0080.6680.642180.4980.5980.612280.2080.7680.492381.0080.6780.432480.1980.4980.9245XR80.9579.8580.6680.7580.8880.6580.4380.7280.7180.4979.6080.4980.7380.4780.9680.9080.7680.8880.7280.2980.7680.7780.3780.5580.9180.7380.4880.7280.6780.7780.1380.2280.9880.7680.4380.4480.7880.6780.3880.7680.7380.3980.8179.7880.5580.7780.1180.7980.651.1580.730.1780.500.8880.710.5180.531.0880.461.2880.491.1880.770.480.760.2980.490.8480.700.4880.590.7380.851.4580.730.4380.790.3380.480.7580.351.3880.690.7780.840.3580.690.6280.560.3480.411.0380.680.5780.500.81
