A Real World Application of Design of Experiments

Black Belt students are exposed to Design of Experiments (DOE) in their classroom training, but in my experience very few of them actually apply the technique while completing a project to earn their Black Belt certificate.  One of my students recently completed a project that made excellent use of a Designed Experiment, and his company […] read more

On July 14th, 2017, posted in: Articles, Six Sigma by Tags: , ,

Writing an Operational Definition for a Measure

Our Yellow Belt course includes an assignment where students are required to write an operational definition for measuring something.  An operational definition, when applied to data collection, is a clear, concise and detailed definition of a measure. The need for operational definitions is fundamental when collecting all types of data. Here is the text of […] read more

On June 4th, 2017, posted in: Articles, Six Sigma by Tags: ,

Using Monte Carlo Simulation in a Six Sigma Project

We often need to improve the performance of a complex system using Six Sigma.  In this article we will discuss how to use simulation to our benefit. We first define the problem as a requirement that is not being met.  We collect data about the extent of the problem and the factors that influence the […] read more

On April 10th, 2017, posted in: Articles, Six Sigma by Tags: ,

Statistical Software – a Trap for the Unwary

In our Six Sigma courses we make extensive use of Minitab statistical software.  Minitab is an extremely comprehensive and powerful software package.  At the same time author Milton Rosenau provided this caution when he said “(Software)…is also a trap for the unwary.” When evaluating the output of a piece of software such as Minitab, we […] read more

On March 15th, 2017, posted in: Articles, Six Sigma by Tags: ,