Explanation of Cp Cpk

CP and CPK are measurements of process capabilities. CP is inherent process capability and CPK is process capability. The main difference with CP and CPK is in hpw you calculate the actual sigma, or standard deviation, either using an estimate or actual calculations. This site has the formulas to figure out CP and CPK http://www.sixsigmaspc.com/dictionary/cpcpk-processcapability.html. This .