Cost of Quality

Cost of quality, abbreviated as COQ, is the sum of all costs associated with conformance and nonconformance.

 

Cost of Quality Formula

\( COQ \;=\;  AC + EFC + IFC + PC   \)

Symbol

\( COQ \) = cost of quality

\( AC \) = appraisal costs

\( EFC \) = external failure costs

\( IFC \) = internal failure costs

\( PC \) = prevention costs