Tag Archives: variation

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 … Continue reading →

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

6 Leadership Competencies

Posted on November 13, 2008 by John Hunter

At the recent Annual W. Edwards Deming Institute Annual conference (this year held in Madison, Wisconsin) Peter Scholtes gave an excellent speech on the 6 Leadership Competencies from his book: The Leader’s Handbook. Those competencies are: The ability to think … Continue reading →

Posted in Deming, Management, Psychology, Systems thinking | Tagged , , , , , , | 8 Comments

Epidemic of Diagnoses

Posted on January 3, 2007 by John Hunter

What’s Making Us Sick Is an Epidemic of Diagnoses by Dr. Welch, Dr. Schwartz and Dr. Woloshin: For most Americans, the biggest health threat is not avian flu, West Nile or mad cow disease. It’s our health-care system. True, and … Continue reading →

Posted in Deming, Health care, Management, Process improvement, Psychology, Quality tools | Tagged , , , , , | 4 Comments

Common Cause Variation

Posted on November 30, 2006 by John Hunter

Every system has variation. Common cause variation is the variation due to the current system. Dr. Deming increased his estimate of variation due to the system (common cause variation) to 97% (earlier in his life he cited figures around 80%). … Continue reading →

Posted in Data, Deming, Management, Quality tools, Theory of Constraints | Tagged , , , , , , | 2 Comments

The Customer Knows Best?

Posted on May 16, 2006 by John Hunter

The Customer Knows Best? Better Think Again by Anthony W. Ulwick It’s important to listen to customers – but not follow their words without skepticism. Ask them to design your next product and you’re likely to miss the mark, suggests … Continue reading →

Posted in Customer focus, Deming, Innovation, Management, Management Articles | Tagged , , , , , | Comments Off on The Customer Knows Best?

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 … Continue reading →

Posted in Management Articles, Manufacturing, Process improvement, Quality tools, Six sigma, Statistics | Tagged , , , , | Comments Off on Six Sigma and Process Drift

New Toyota CEO’s Views

Posted on July 22, 2005 by John Hunter

The Man Driving Toyota from Business Week: Toyota has grown in the past few years, but [there’s a risk] that a belief that the current status is satisfactory creeps into the minds of employees. That’s what I’m worried about. We … Continue reading →

Posted in Management, Process improvement, Toyota Production System (TPS) | Tagged , , , | 7 Comments