Tag Archives: variation

Interview of Bill Hunter: Statistical Variability and Interactions

Posted on July 25, 2022 by John Hunter

Interview of Bill Hunter on Statistical Variability and Interactions by Peter Scholtes, 1986: In this interview Bill Hunter describes how results are made up of the impact and interactions of many variables. Many of those variables we don’t know about … Continue reading →

Posted in Data, Management, Statistics, webcast | Tagged Bill Hunter, experiments, interview, learning, Peter Scholtes, Statistics, variation, webcast | Comments Off

Don’t Expect Short Quotes to Tell the Whole Story

Posted on July 25, 2017 by John Hunter

When people try to use a short quote as an accurate encapsulation of a management concept they will often be disappointed. It is obvious that Dr. Deming believed that organizations failed to use data effectively to improve. He proposed that … Continue reading →

Posted in Data, Management, quote, Statistics, Systems thinking | Tagged Data, Deming, quote, Statistics, Systems thinking, variation | 4 Comments

Special Cause Signal Isn’t Proof A Special Cause Exists

Posted on October 3, 2012 by John Hunter

One of my pet peeves is when people say that a point outside the control limits is a special cause. It is not. It is an indication that it likely a special cause exists, and that special cause thinking is … Continue reading →

Posted in Data, Deming, Management, Manufacturing, Process improvement, Quality tools, quote, Six sigma, Statistics, Systems thinking | Tagged control chart, curiouscat, Data, Deming, in-process measures, Process improvement, Quality tools, Six sigma, Systems thinking, variation | Comments Off

Introductory Videos on Using Design of Experiments to Improve Results

Posted on June 18, 2012 by John Hunter

The video shows Stu Hunter discussing design of experiments in 1966. It might be a bit slow going at first but the full set of videos really does give you a quick overview of the many important aspects of design … Continue reading →

Posted in Data, Design of Experiments, Science, Six sigma, Statistics | Tagged Data, Design of Experiments, engineering, experiments, Process improvement, Science, Six sigma, Statistics, variation, webcast | 6 Comments

Agile Story Point Estimation

Posted on February 8, 2012 by John Hunter

In agile software development tasks are documented as user stories. Then the level of effort for those stores can be estimated by assigning each story points. The velocity that can be produced in a period (called a sprint, for us … Continue reading →

Posted in Data, IT, Process improvement, Quality tools, quote, Software Development | Tagged agile management, project management, Quality tools, quote, Software Development, variation | Comments Off

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 … 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 | Comments Off

Assigning Story Points to Bug Fixes

Posted on January 27, 2011 by John Hunter

Agile software development has teams estimate the effort to deliver requests from the product owner. The estimates are done in points (in order to abstract away from hours – as estimates have plenty of variation in how long they will … Continue reading →

Posted in IT, Quality tools, Software Development, Systems thinking | Tagged agile management, kanban, programming, project management, Quality tools, Software Development, variation | 2 Comments

How to Manage What You Can’t Measure

Posted on August 4, 2010 by John Hunter

In Out of the Crisis, page 121, Dr. Deming wrote: the most important figures that one needs for management are unknown or unknowable (Lloyd S. Nelson, director of statistical methods for the Nashua corporation), but successful management must nevertheless take … Continue reading →

Posted in Deming, Management, Popular, quote, Systems thinking | Tagged curiouscat, Data, Deming, management, managing people, Popular, quote, Statistics, Systems thinking, variation | 12 Comments

Nice Non-technical Control Chart Webcast

Posted on April 28, 2010 by John Hunter

This very brief introduction to control charts by PQ Systems provides a very watchable non-technical overview. Getting people to understand variation is important, and not easy. This video is one more quick reminder for those still trying to incorporate an … Continue reading →

Posted in Deming, Management, Process improvement, Quality tools, Systems thinking, webcast | Tagged control chart, Deming, problem solving, Process improvement, Systems thinking, variation, webcast | 1 Comment

Red Bead Experiment Webcast

Posted on April 22, 2009 by John Hunter

Dr. Deming used the red bead experiment to present a view into management practices and his management philosophy. The experiment provides insight into all four aspects of Dr. Deming’s management system: understanding variation, understanding psychology, systems thinking and the theory … Continue reading →

Posted in Data, Deming, Education, Management, Performance Appraisal, Psychology, quote, Respect, webcast | Tagged control chart, Data, Deming, Fun, management, management experts, Performance Appraisal, Psychology, Quality tools, training, variation, webcast | 3 Comments