Hii Janishsamani........ It's not opposite.... It's actual as per global and Six sigma guidelines also proved from calculation. I know why u are saying... Because in few industry they are considering Pp/Ppk as preliminary process capability and Cp/Cpk as long term process capability. So, it's an industry to industry understanding variations but global standard and six sigma standard will be fix Okay.
And one more point Cp/Cpk is for only one complete lot but Pp/Ppk is for lot to lot, process to process variation. Once think... Cp is capability of the process whereas Pp is performance of the process Which one can be long term??
