| Cart Total:
Menu
Case Study
  • Open Access

Quality Quandaries: Interpretation of Signals from Runs Rules in Shewhart Control Charts

Publication:
Quality Engineering
Date:
October 2010
Issue:
Volume 22 Issue 4
Pages:
pp. 351-357
Author(s):
Trip, Albert; Does, Ronald J. M. M.

Abstract

The Shewhart control chart, combined with appropriate runs rules, is a common form of statistical process control. Runs rules aid troubleshooting, giving information about the state of the process when it goes out of control. Proper use of a Shewhart control chart requires the quantification of causes and effects of failure. The example of Douwe Egberts, a Dutch tea and coffee manufacturer/distributor, demonstrates how run rules and a Shewhart control chart can be used as an effective statistical process control tool.

ALREADY A MEMBER?    REGISTER