Dr. Mikel Harry

One must understand that the short-term standard deviation reports on a process’s “instantaneous reproducibility” whereas the long-term standard deviation reflects the “sustainable reproducibility.”  To this end, the short-term standard deviation comprises the “within group” sums of squares (SSW).  The long-term standard deviation incorporates the “total” sums-of-squares (SST).  Of course, the difference between the two constitutes […]

Dr. Mikel Harry answers the question, “How can Six Sigma be applied to the Human Resources (HR) function?” Listed are some simple examples for Human Resource projects: 1) Employee turnover rate. 2) Job satisfaction issues (surveys). 3) Management satisfaction. 4) Cafeteria food quality. 5) Policy deployment. 6) New hire process quality and cycle time. 7) […]

In my deployment and implementation experience, Black Belts should not be pooled into a central organization and then farmed out like a bunch of “rented experts.”  To my knowledge, only a few organizations have successfully implemented this type of approach.  When executed in a large-scale corporation, there is a certain amount of “up-front management appeal.”  […]

The first Black Belt project is just that – a training project.  It is not a platform from which to attempt solving world hunger, or the like.  The purpose of a training project is two fold.  The first purpose is related to the reinforcement of learning.  The second purpose is to realize an operational objective […]

Is the process broken because of poor process control?  Is it broken because of inferior technology?  Is is broken because of inadequate operational knowledge?  Is is broken because  of a mismatch between the process technology and the design specifications?  Is is broken because of some interaction thereof?  How can you expect anyone to rationally answer […]

It is widely known (in the field of quality management) that Motorola inaugurated Six Sigma in the mid eighties.  At that time, Six Sigma was employed to make a dramatic gain in customer satisfaction (by way of quality improvement).  Almost by nature, the initiative was based on the idea of defect reduction.  For the sake […]

I do not believe that any of the Six Sigma roles should constitute a career, as they are temporary job assignments.

It is possible to analyze non-normal data when conducting a capability analysis – even if it cannot be transformed to a state of normality.  Of course, this position assumes that the underlying distribution is unimodal in nature (i.e., not multimodal).  Technical details aside, this particular type of problem can quickly become an analytical nightmare for […]

In my opinion, between 25 and 50 percent of variable pay must be directly linked to “hard” Six Sigma goals – throughout the organizational hierarchy.  This tactic usually gets everybody’s attention and quickly sounds the alarm to “align goals and objectives.”  It also sets the mood for “win-win” and generates a lot of leadership energy.  […]

I assume you mean “sustainability of project results.”  In other words, the resulting benefits are not to be enjoyed just one time – they are recurrent in nature.  The best way to ensure that recurrent benefits are continually realized is to monitor the situation.  This would normally involve a proactive accounting system and someone to […]

The first generation of Six Sigma (1984 – 1994) was initiated at Motorola.  At this time, Six Sigma was primarily focused on the reduction of defects (quality improvements).  It was widely believed that the reduction of defects would naturally and invariably offer certain economic benefits – even though such benefit could not often be directly […]

Rhetorically speaking, what is the purpose of ISO9000?  Is it a standard of expectation, much like Six Sigma?  If an organization is currently performing to a Six Sigma level, would there even be a need for this standard?  If this standard was perfectly deployed and implemented in a corporation, would it be a Six Sigma […]

The gentlemen referred to as “Pareto” long ago advocated that 80 percent of the world’s wealth was controlled by 20 percent of the world’s population.  This phenomenon is also called the “Pareto Principle,” and will be designated as “PP” for our discussion.  For the case just given, it should be noted that the 80 percent […]

Obviously, you know how to ask a “huge” question.  In terms of scope and depth, it is nearly equivalent to the question: “How does one go about boiling the ocean without harming the ecosystem – give me some examples (case studies), tell me the best tools to use, how to use the tools, and kindly […]

Having “been there and done that,” I deeply appreciate your question.  A simple literature search will yield a lot on this subject.  However, you should first read the Rath and Strong book on Six Sigma.  I highly recommend this particular reading, especially for “middle management level” guidance.  This book provides a number of relevant templates […]

The following references will provide a very nice overview of the field – from general theory to in-depth case studies: 1) Six Sigma: The Breakthrough Management Strategy Revolutionizing the World’s Top Corporations by Mikel J. Harry, Ph.D. and Richard Schroeder, Doubleday 2000. 2) Six SIGMA Leadership Handbook by Rath and Strong Staff, John Wiley & […]

As humans, we often seek insight by way of reasoning.  In this case, we are concerned with the reasoning of a “skeptic.”  Referencing the standard dictionary (Excel version), we define a skeptic as “somebody who questions the validity or truth of things that most people accept.”  Of little surprise, it would be generally accepted that […]

Simply stated, an opportunity is merely a set of conditions favorable to some end. In view of the two possible fates of a (critical to quality) CTQ – success or failure – we have the idea of a yield opportunity and that of a defect opportunity. Since one is merely the flip side of the other […]

The simpliest form of an answer to each of your questions is “yes.”  There does exist an ever-present danger that Six Sigma will become diluted.  In fact, there are many signs that it has already happened.  For example, many business executives now see Six Sigma as a commodity.  So what is driving a lot of […]

The best metrics are those that correlate to your business goals. If you are uncertain as to the extent of correlation – measure it.

To me, the ideology of Six Sigma will evolve in two distinct by complementary directions.  The first will be a focus on value creation, not just cost reduction and quality improvement.  The second will be an implosion of Six Sigma to the personal level.  I have been working with these two perspectives for quite some […]

The following references will provide a very nice overview of the field – from general theory to in-depth case studies: 1) Six Sigma: The Breakthrough Management Strategy Revolutionizing the World’s Top Corporations by Mikel J. Harry, Ph.D. and Richard Schroeder, Doubleday 2000. 2) Six Sigma Leadership Handbook by Rath and Strong Staff, John Wiley & […]

Of considerable interest, this concept often mystifies newcomers to field of Six Sigma. As you already surmised, the referenced charts rely upon the assumption of a unilateral specification (single-sided performance requirement). From a defect accounting point-of-view, it should be fairly obvious that a unilateral (one-sided) specification must be treated as a single defect category. However, a bilateral (two-sided) […]

Imagine working for a corporation that is operating at an overall quality level of about Six Sigma.  In terms of capability, this means that the company would be about 1,800 times better than the average organization (about Four Sigma).  So, what would such a difference be like?  If it existed, what would not need to […]