SAE EIA738

This document proivdes the guidelines for the utilization of Cpk as a monitor of process performance.

This document:

-defines the process capability index (Cpk),

-outlines some general methods for estimating Cpk,

-describes acceptable methods of reporting Cpk,

-discusses the advantages, disadvantages, and requirements for some potential applications of Cpk,

-addresses the use of similar methods of assessing quality improvement, and

-provides some perspective on the value of Cpk and similar techniques.

Application of the guidelines in this document should allow businesses to use Cpk or similar techniques to effectively monitor one aspect of quality improvement and to promote strong customer/supplier relationships.