Tag Archives: SPC

Dr. Deming in 1980 on Product Quality in Japan and the USA

Posted on December 5, 2011 by John Hunter

I posted an interesting document to the Curious Cat Management Library: it includes Dr. Deming’s comments as part of a discussion organized by the Government Accounting Office in 1980 on Quality in Japan and the United States. The document provides some interesting thoughts from Dr. Deming and others; Dr. Deming’s statements start on page 52 of the document. For those really interested in management improvement ideas it is a great read. I imagine most managers wouldn’t enjoy it though (it … Continue reading →

Posted in Deming, Management, Psychology, Public Sector, Quality tools, quote, Respect, Statistics, Systems thinking | Tagged continual improvement, curiouscat, Deming, government, Japan, Lean thinking, management, management history, managing people, Process improvement, Psychology, Public Sector, quality, Quality tools, quote, respect for people, SPC, Statistics, Systems thinking, variation

Managing Our Way to Economic Success

Posted on August 23, 2010 by John Hunter

From Managing Our Way to Economic Success, Two Untapped Resources by William G. Hunter, my father. Written in 1986, but still plenty relevant. We have made some good progress, but there is much more to do: we have barely started adopting these ideas systemically. there are two enormously valuable untapped resources in many companies: potential information and employee creativity. The two are connected. One of the best ways to generate potential information to turn it into kinetic information that can … Continue reading →

Posted in Creativity, Economics, Management, Process improvement, Quality tools, Respect, Statistics, Systems thinking | Tagged Bill Hunter, Creativity, Data, Deming, Economics, management, Management Articles, Process improvement, Quality tools, respect for people, SPC

Soren Bisgaard

Posted on December 22, 2009 by John Hunter

Soren Bisgaard died earlier this month of cancer. Soren was a student of my father’s who shared the commitment to making a difference in people’s lives by using applied statistics properly. I know this seem odd to many (I tried to describe this idea previously, also read his acceptance of the 2002 William G. Hunter award). Soren served as the director of the director of the Center for Quality and Productivity Improvement at the University of Wisconsin-Madison (founded by William … Continue reading →

Posted in Psychology, Six sigma, Statistics | Tagged commentary, John Hunter, Madison, Six sigma, SPC, Statistics, William Hunter | 4 Comments

How to Create a Control Chart for Seasonal or Trending Data

Posted on March 25, 2009 by John Hunter

Lynda Finn, President of Statistical Insight, has written an article on how to create a control chart for seasonal or trending data (where there is an underlying structural variation in the data). Essentially you need to account for the structural variation to create the control limits for the control chart. She also provides a Minitab project file. Both are available for download from the Curious Cat Management Improvement Library. Related: Control Charts in Health Care – Common Cause Variation – … Continue reading →

Posted in Data, Deming, Management, Process improvement, Quality tools, Science, Statistics | Tagged Data, Deming, Process improvement, Quality tools, SPC, Statistics, variation | 3 Comments

Six Sigma and Process Drift

Posted on May 8, 2006 by John Hunter

Quality Quandaries: Six Sigma, Process Drift, Capability Indices, and Feedback Adjustment by George Box and Alberto Luceno. This article is for the more statistically inclined. The Six Sigma specification makes an allowance of 1.5 standard deviations for process drift. Simple ways in which a major part of such drift can be removed are given. These employ feedback adjustment methods specifically designed for SPC applications. Feedback adjustment can be dangerous: tampering. In fact, I would say attempting it is likely to … Continue reading →

Posted in Management Articles, Manufacturing, Process improvement, Quality tools, Six sigma, Statistics | Tagged George Box, Six sigma, SPC, Statistics, variation

Quality, SPC and Your Career

Posted on December 24, 2005 by John Hunter

Lead To Succeed [sigh, ASQ broke the link so I removed it, it sure gets tiring how backwards some organizations still are about using the internet, June 2010] by Stephen S. Prevette: * Succeed as a quality professional by branding yourself and providing a service or product your manager and organization deem worth paying for. * Lead your manager “your customers” by providing the data they need in a form they can understand. This is a great article on how … Continue reading →

Posted in Career, Deming, Management, quote, Statistics, Systems thinking | Tagged Career, leadership, managing people, Quality tools, SPC, Statistics | 2 Comments

SPC: History and Understanding

Posted on September 23, 2005 by John Hunter

SPC: From Chaos To Wiping the Floor [broken link removed 🙁 it will be nice when sites start to realize breaking links is not acceptable] by Lynne Hare (who also was the 1997 Hunter Award winner) Shewhart based control chart limits more on the economics of change than on underlying probabilities. Ever the empiricist, Shewhart seems not to have trusted probability limits alone. Setting control limits at 3 standard deviations is a decision based on experience. Shewhart, Deming and others … Continue reading →

Posted in Management, Statistics | Tagged control chart, Data, Six sigma, SPC, Statistics | 1 Comment

Control Charts in Health Care

Posted on February 26, 2005 by John Hunter

This post is an edited version of a message I sent to the Deming Electronic Network. I find the “control charts in health care” thread quite interesting. From Mike Woolbert’s post [link broken, so I removed it] > I have read many comments about the 8 minute ambulance trip. > This doesn’t seem to be a system measure, but a result measure. It seems to me the 8 minute (90% of the time) measure is an attempt at a process … Continue reading →

Posted in Data, Deming, Health care, Management, Quality tools, Statistics | Tagged Brian Joiner, control chart, Data, Deming, Health care, management tools, SPC, Statistics, Systems thinking | 3 Comments

Management Improvement History

Posted on September 23, 2004 by John Hunter

I do believe we need to improve our practice of Quality (and to do that we need to understand what happened in the past and why it was not more successful). The idea that Design of Experiments (DoE) was at the core of some Quality Movement to me is not at all accurate. In my experience only a few Quality professionals today understand what it means and how it should be applied. The idea that it was common place in the 40’s I seriously doubt (though I don’t have first hand knowledge of this). I find it difficult to believe we would have decided to stop using DoE if it was commonly done previously. The understanding I have from those that should know (like George Box and previously my father – Bill Hunter) is that it was not at all common practice and still is not outside of a few industries and even there it is isolated in the domain of a few experts. Continue reading →

Posted in Deming, Design of Experiments, Lean thinking, Management, Popular, Process improvement, Quality tools, Six sigma, Statistics | Tagged Bill Hunter, curiouscat, Deming, Design of Experiments, George Box, management, management experts, management history, quality, Six sigma, SPC, Statistics, TQM | 4 Comments