The capability index for a process centered on the desired mean is

A) $C _ { p } = \frac { ( U S L - L S L ) } { 6 \sigma }$

B) $C _ { p } = \frac { 3 \sigma } { ( U S L - L S L ) }$

C) $C _ { p } = \frac { 6 \sigma } { ( U S L - L S L ) }$

D) $C _ { p } = \frac { ( U S L - L S L ) } { 3 \sigma }$

Question

The capability index for a process centered on the desired mean is

A) $C _ { p } = \frac { ( U S L - L S L ) } { 6 \sigma }$

B) $C _ { p } = \frac { 3 \sigma } { ( U S L - L S L ) }$

C) $C _ { p } = \frac { 6 \sigma } { ( U S L - L S L ) }$

D) $C _ { p } = \frac { ( U S L - L S L ) } { 3 \sigma }$

Quizplus · Accepted Answer

The capability index $C_p$ for a process centered on the desired mean is calculated as $C _ { p } = \frac { ( U S L - L S L ) } { 6 \sigma }$, which measures the potential capability of a process assuming it is centered between the specification limits.

The Capability Index for a Process Centered on the Desired Cp=(USL−LSL)6σC _ { p } = \frac { ( U S L - L S L ) } { 6 \sigma }Cp​=6σ(USL−LSL)​

The Capability Index for a Process Centered on the Desired $C _ { p } = \frac { ( U S L - L S L ) } { 6 \sigma }$