Pairwise Ranking: A Six-Step Approach to Evaluating Alternatives

In the Improve phase of a Six Sigma project, we typically need to choose between two or more potential solutions to a problem.  There are several tools to help in making this decision, one of which is pairwise ranking.   Pairwise ranking is used by individuals or teams to qualitatively prioritize a list of alternatives.  There […] read more

Statistical Significance and Practical Significance

When we work on process improvement, we need to check our results to see if the output of the process was changed for the better.  There are two ways to evaluate the results, practical significance and statistical significance.  We need to verify that the results are significant in both respects.  At the risk of stating […] read more

Common Misconceptions about Six Sigma

Our online Green Belt program includes an assignment where students are introduced to Six Sigma by reading a lecture, reading Chapter One in the text, and viewing several videos.  They are then challenged to explain how the readings and videos either reinforced or changed their preconceived notion of what Six Sigma is, based on what […] read more

On July 5th, 2018, posted in: Articles, Six Sigma by Tags: ,

Are we solving the right problem?

Students in our Green Belt course analyze and comment on a case study that deals with products that are returned by customers.  They are challenged to discuss what was done well in the case and what could have been done better. The products being returned for credit are data storage systems that are suspected of […] read more