I often hear it said that one of the goals of a business is to increase customer satisfaction (in “lean” terms we would say “Satisfy the Voice of the Customer”).   I disagree with this statement.   Customer satisfaction is actually only one of the means by which we increase…

Continue Reading →

2014 pearls of wisdom from the UK / USA “Senseis” of Lean thinking : Jim Womack and Daniel Jones

Extremely valuable insights from the true Gurus and Senseis of Lean : James P. Womack and Daniel T. JonesUK Lean Summit,  London, England, November 2014 “The political discourse is all about external issues to actual people creating value. It’s all outside the box. What’s inside the box, how people actually work to…

Continue Reading →

Hypothesis Testing, Confidence Intervals, Confidence Levels, Alfa level, Beta level and Power …all clearly explained

I recently found the best worded explanation of  Hypothesis Testing, Confidence Intervals, Confidence Levels,  Alfa level, Beta level and Power that I have every read.   All credit to YALE UNIVERSITY (USA) Department of Statistics !Usually the students of Lean Six Sigma follow Power Point presentations and have a trainer to…

Continue Reading →

A useful ( but not commonly mentioned) tool in Lean Six Sigma is called Little’s Law.   Little’s Law describes the fundamental long-term relationship between Work-In-Process, throughput and flow time of a production system in a steady state:   As an equation Little’s Law can be written as : Inventory =Throughput…

Continue Reading →

News this week from the UK government is a classic lesson in Six-Sigma.  The government wants to be the first in the World to make more information about surgeon (doctor for an operation) “success rates” available to the general public in order that they can make “better decisions” about who…

Continue Reading →

What are the fundamental differences between Lean Six-Sigma and other process improvement /quality improvement programs ( TQM, TQI, ISO, EFQM etc) ?  Lean Six Sigma overlaps with many other quality programs in many areas however there are two keys areas in which it stands unique and alone. 1.  Single Piece…

Continue Reading →

Defining the goal of Lean Six Sigma in 4 sentences :  Identify and understand the true value that the customer needs from a product of service and optimize the efficiency and effectiveness of the processes needed to produce that product or service. The optimization is achieved by reducing or eliminating…

Continue Reading →