$\mathrm { C } _ { \mathrm { pk } }$ is always equal to,or greater than $\mathrm { C } _ { \mathrm { p } }$ .

Question

Quizplus · Accepted Answer

$\mathrm{C}_{\mathrm{pk}}$ is a measure of process capability that considers both the process mean and variability, while $\mathrm{C}_{\mathrm{p}}$ only considers variability. $\mathrm{C}_{\mathrm{pk}}$ can be less than $\mathrm{C}_{\mathrm{p}}$ if the process mean is not centered between the specification limits.

Cpk\mathrm { C } _ { \mathrm { pk } }Cpk​

$\mathrm { C } _ { \mathrm { pk } }$