Reigle Stewart

Wendy, so that you know, Arizona State University is now
successfully applying Six Sigma to several of its key
processes. A retired Motorola executive is heading this
effort for ASU.

Stan, another one of your brilliant answers!

Don’t listen to this malarky from Andy, he is wrong. His
only motive here is to bash Dr. Harry, not answer your
question. Process entitlement capability is the level of
performance you enjoy when all assignable causes have
been removed from the system of causation. As you may
know, systematic effects are nonrandom in nature.…[Read more]

Mr Stan:
It is most unfortunate that I was not blessed with a spot of simplistic genius or marked by the powers of extraordinary communication.  I humbly aplogize for being somewhat wordy in my explaination of the B vs C test.
Perhaps you could grace us with a definitive 10 second explaination of how to account for beta risk when using the…[Read more]

Many years ago, Mr. Dorian Shannin introduced the B vs C test as a methodology to statistically contrast two groups (in much the same vain as the classical t-test).  The primary advantage was the ability to use fewer samples for the experimental condition.  To clarify this notation, we must first understand that “C” stands for the “control” condi…[Read more]

Johnny:
 
Please recognize that Stan (and a couple of his cronies) is one of the very few contributors on this website that has a personal vendetta against Dr. Harry.  Just read through Stan’s (and the others) historical postings and you will discover first-hand what I am talking about.  You will instantly recognize that such extreme bias is roo…[Read more]

Perhaps some fact-based insights can be realized by
running the suggested experiment. In this way, you too
can advance your application and theoretical knowledge
about Six Sigma and not be so dependent upon the
research and work of others. You might event find or
discover some new knowledge. Judging by your
responses in this thread,…[Read more]

H82BLATE: As I understand your question, you can
“discover” an answer by first defining each of the 3C’s at
two levels (low and high) and then conduct a factorial
experiment on the eight combinations. The response
variable would be TPDU. For example, capability can be
set at Z.st = 3 and Z.shift = 1.0, thereby providing a long-
term…[Read more]

To Gary Cone and All Others. The following question was
posed earlier in this thread: Consider four performance
opportunities that define a system called “X.” For our
discussion we will say the opportunities are A, B, C and
D. Suppose only A and B are “active.” This says they are
regularly assessed in terms of “performance to stan…[Read more]

Stan:
Anyone and everyone is fully capable of calling Mr. Jeff Goss at the Center for Professional Development, College of Engineering, ASU.  A simple phone call will confirm:
A) The debate was (in fact) scheduled for the given time (July 29th)
B) You did not contact either Mr. Goss or Dr. Montgomery
C) Dr. Montgomery and Dr. Keats…[Read more]

Gabriel: The shift factor is related to sampling means, not
a shift in the population mean.

Gabrial:You state that “THE SHORT TERM STANDARD
DEVIATION CAN BE SMALLER THAN THE LONG TERM
STANDARD DEVIATION! A NEGATIVE SHIFT!” My
answer is simple, you are not correcting for differences in
the corresponding degrees of freedom. If the sums-of-
squares between groups is zero, then the standard
deviation long-term S.lt = SST/(ng-1)…[Read more]

Craig: Funny thing, the benchmarking data has been
published for nearly 20 years in several Motorola
documents, training materials, and other books and
articles … I would suggest you investigate deeper than a
“person” you happen to know that worked at Motorola
(then). Oh, by the way, my wonderful wife (Susan) has
worked at Motrola…[Read more]

To the poster “Sorry Reigle.” OK, if you want me to be
wrong, so be it … but that does not change its historical
truthfulness, nor its mathematical validity. You cannot
convince anyone with an “opinion.” Show us your
evidence (verifiable facts), like any good Six Sigma
practioner would do. As I have said many times on this
forum,…[Read more]

To All on iSixSigma:
 
To help clarify the simplicity of the shift (that others try to make complicated), I am providing the instructions for a most elementary Excel based simulation.  We will use a uniform distribution to keep things simple, but you can also use a normal distribution.  But, first time through, use the uniform since it is si…[Read more]

Gabriel:Transient random shifts will be “in control” on a control
chart but do have a practical impact. Consider a power
transformer. The “electrical losses” are directly related to
steel thickness of the laments that comprise the
transformer’s core. If a certain section in a given “roll” of
stamped steel is “on the high side” the…[Read more]

You can find the “original” thinking. Look at the header
bar on this web page under the red button called “New
eBook”. Reigle

Process capability can “shift” in two basic ways. The first
type is called “static mean off-set.” It is characterized by
the equation Z.shift.static = | T – M | / S.st, where T is the
“target value,” also called the “nominal specification,” M is
the process mean, and S.st is the short-term
(instantaneous) standard deviation. Thus, fo…[Read more]

R2D2:
As we speak, there is a substantial effort currently underway to do just what you are speaking of.  This effort is operating under the banner of the “Six Sigma Federation” and currently involves several universities (US and international schools of enginerring and business) as well as several fortune 100 corporations.  Standardards are b…[Read more]

Stan: I know you like to be a little controversial and that is
OK by me … to each his own, and rightfully so. However,
some have invested a fair amount work (and personal
expense) to put this debate together. Various key people
have organized their calendars to make their contribution
possible. These individuals (and myself) would…[Read more]