项目文档[机密]SPC计算公式一览表项目名称：SPC计算公式一览表项目编号：SPC-002文档编号：版本号：1.0编制单位：研发部文档控制日期修改人版本修改意见审阅人2005-06-011.0建立文档目录SPC计算公式一览表......................................................................................................................1文档控制..........................................................................................................................................1一、计量型......................................................................................................................................4Mean均值.................................................................4Max最大值................................................................4Min最小值................................................................4Range极差最大跨距.......................................................4MR移动极差...............................................................4StdDev标准差.............................................................4Sigma.....................................................................5UCL、CL、LCL上控制限、中心限、下控制限（计量型）.........................5Cp过程能力指数...........................................................6Cmk机器能力指数..........................................................6Cr过程能力比值...........................................................6Cpl下限过程能力指数......................................................6Cpu上限过程能力指数......................................................6Cpk修正的过程能力指数....................................................7k：偏移系数...............................................................7Pp过程性能指数...........................................................7Pr过程性能比值...........................................................7Ppu上限过程性能指数......................................................7Ppl下限过程性能指数......................................................7Ppk修正的过程性能指数....................................................7Cpm目标能力指数..........................................................7Ppm目标过程性能指数......................................................8Zu(Cap)规格上限Sigma水平................................................8Zl(Cap)规格下限Sigma水平................................................8Zu(Perf)..................................................................8Zl(Perf)..................................................................8Fpu(Cap)超出控制上限机率.................................................8Fpl(Cap)超出控制下限机率.................................................8Fp(Cap)超出控制界线的机率...............................................8Fpu(Perf).................................................................8Fpl(Perf).................................................................9Fp(Perf).................................................................9Skewness偏度，对称度.....................................................9Kurtosis峰度.............................................................9二、计数型......................................................................................................................................9Mean均值.............................................................
