Cp index is a statistical measure of process capability. This means that it is a measure of how capable a process is of producing output within specification limits. This measurement only has meaning when the process being examined is in a state of statistical control. If the process mean is not centered within the specification limits, this value may be misleading, the Cpk index should be used instead for analyzing process capability instead: Cpk Process Capability index (equivalent) taking account of off-centredness: effectively the Cp for a centered process producing a similar level of defects - the ratio between permissible deviation, measured from the mean value to the nearest specific limit of acceptability, and the actual one-sided 3 x sigma spread of... Look up Process in Wiktionary, the free dictionary Process (lat. ... Statistical Process Control, or SPC is a method for achieving quality control in manufacturing processes. ...
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