19
Joseph J. Pignatiello, Jr. Texas A&M University College Station, Texas
John S. Ramberg Universily of Arizona Tucson, Arizona
The ubiąuitous practice of using process capability indices in manufacturing is frequently flawed. We critiąue their generał use and offer valid altematives.
Process capability indices have become one of the most frequently specified statistical measures for demonstrating total Ä…uality. They have gained widespread acceptance because they summarize a complex set of process data
*A portion of this chapter is based on “Process Capability Indices: Just Say No,†1993 ASQC Quality Congress Transactions, pp. 92-104
407