Quality Progress - December 2017 - 72

Statistics Spotlight
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so quality professionals can apply these methods
to reduce variability on the shop floor or improve
Although quality
services.
professionals
ASQ's Quality Body of Knowledge (QBoK)¹ lists
must understand
the many dimensions of the field of quality. In fact,
statistics, not
20% of the second section-the pursuit of operational
every statistician
excellence-pertains directly to the field of statistics.
must understand
These areas of overlap between quality and statistics
the world of
are shown in Table 1 (p. 71).
quality.
Any quality professional seeking ASQ certification
as a quality technician, engineer, reliability engineer,
or manager of quality/organizational excellence² must possess some basic
knowledge of statistics to pass the exams. Any quality professional who seeks
competency in the quality field also must possess some knowledge of statistics,
regardless of certifications.
Statistics is the language of quality. Although quality professionals must
understand statistics, not every statistician must understand the world of quality. For example, a statistician may be researching social sciences or working in
a medical lab. For those statisticians working in that industry, there are many
roles they fill while applying methods in the scope of the QBoK, such as internal
consultant, trainer, mentor and innovator.
Statisticians are needed for supporting quality professionals in solving complex problems. Although quality professionals should be familiar with statistical
concepts-such as hypothesis testing and regression analysis-a problem may
require the application of statistical methods beyond the quality practitioner's
skillset. Suppose an organization invests in a complicated new process with
multiple feedlines that requires the use of a multivariate regression analysis for
an optimization project, for example. A professional statistician may be needed
to plan and analyze the study. Ideally, the statistician also would teach the
method to the quality engineer.
Somebody must train and mentor quality professionals who seek more
knowledge of statistics, and this is a role an organization's statistician can fill.
This does not mean quality professionals will eventually replace the statistician.
As the quality professional's skill level increases, he or she still will need assistance addressing more complicated problems that remain outside their current
skill level.
Innovation often refers to the creation of new products and services, and
there is a need for statisticians there as well.³ Statisticians also are needed, however, for innovation in statistical methods⁴ to provide new methods that can be

Matthew Barsalou is a statistical problem resolution Master
Black Belt (MBB) at BorgWarner Turbo Systems Engineering
GmbH in Kirchheimbolanden, Germany. He has a master's
degree in business administration and engineering from
Wilhelm Büchner Hochschule in Darmstadt, Germany, and
a master's degree in liberal studies from Fort Hays State
University in Hays, KS. Barsalou is an ASQ senior member
and holds several certifications.

72 QP

December 2017 ❘ qualityprogress.com

applied by quality professionals.
Quality professionals may not be
reading statistical journals looking
for cutting-edge tools, but those
methods that gain traction eventually can find their way into the
hands of quality professionals.
Just look at a physicist's solution
to a problem that kicked off the
modern field of quality: Walter
Shewhart's SPC.⁵

The same language

Most statisticians probably are
not quality professionals, and the
majority of quality professionals
probably are not statisticians.
There is, however, a heavy overlap
between the two fields as indicated by the ASQ QBoK, and this
area of overlap presents opportunities for both sides.
The quality side provides new
problems for the statisticians
to solve, and statisticians can
provide quality professionals with
the methods-both in the form of
new innovations and in training in
current methods.
Although quality engineer
and statistician are two separate
fields, they must speak the same
language: statistics.
REFERENCES
1. ASQ, "About the Quality Body
of Knowledge, " http://asq.org/
knowledge-center/about-the-qualitybody-of-knowledge.
2. Ibid.
3. Kymm K. Hockman and Willis A.
Jensen, "Statisticians as Innovation
Leaders," Quality Engineering, Vol.
28, No. 2, 2016, pp. 165-174.
4. George E.P. Box and William H.
Woodall, "Innovation, Quality
Engineering and Statistics," Quality
Engineering, Vol. 24, No. 1, 2012, pp.
20-29.
5. Lynne B. Hare,"SPC: From Chaos to
Wiping the Floor," Quality Progress,
July 2003, pp. 58-63.


http://www.asq.org/knowledge-center/about-the-quality-body-of-knowledge http://www.qualityprogress.com

Table of Contents for the Digital Edition of Quality Progress - December 2017

Seen and Heard
Progress Report
Mr. Pareto Head
Expert Answers
Career Coach
The Next Rung
Titles and Take-Home
Certification Certainty
Six Sigma Satisfaction
Stay the Course
Maintenance Makeover
Confronting Confusion
Standard Issues
Statistics Spotlight
Marketplace
Footnotes
Try This Today
Quality Progress - December 2017 - intro
Quality Progress - December 2017 - cover1
Quality Progress - December 2017 - cover2
Quality Progress - December 2017 - 1
Quality Progress - December 2017 - 2
Quality Progress - December 2017 - 3
Quality Progress - December 2017 - 4
Quality Progress - December 2017 - 5
Quality Progress - December 2017 - Seen and Heard
Quality Progress - December 2017 - 7
Quality Progress - December 2017 - Progress Report
Quality Progress - December 2017 - 9
Quality Progress - December 2017 - 10
Quality Progress - December 2017 - 11
Quality Progress - December 2017 - 12
Quality Progress - December 2017 - Mr. Pareto Head
Quality Progress - December 2017 - Expert Answers
Quality Progress - December 2017 - 15
Quality Progress - December 2017 - Career Coach
Quality Progress - December 2017 - 17
Quality Progress - December 2017 - 18
Quality Progress - December 2017 - 19
Quality Progress - December 2017 - The Next Rung
Quality Progress - December 2017 - 21
Quality Progress - December 2017 - 22
Quality Progress - December 2017 - 23
Quality Progress - December 2017 - 24
Quality Progress - December 2017 - 25
Quality Progress - December 2017 - 26
Quality Progress - December 2017 - 27
Quality Progress - December 2017 - 28
Quality Progress - December 2017 - 29
Quality Progress - December 2017 - Titles and Take-Home
Quality Progress - December 2017 - 31
Quality Progress - December 2017 - 32
Quality Progress - December 2017 - 33
Quality Progress - December 2017 - 34
Quality Progress - December 2017 - 35
Quality Progress - December 2017 - Certification Certainty
Quality Progress - December 2017 - 37
Quality Progress - December 2017 - 38
Quality Progress - December 2017 - 39
Quality Progress - December 2017 - 40
Quality Progress - December 2017 - 41
Quality Progress - December 2017 - 42
Quality Progress - December 2017 - 43
Quality Progress - December 2017 - Six Sigma Satisfaction
Quality Progress - December 2017 - 45
Quality Progress - December 2017 - 46
Quality Progress - December 2017 - 47
Quality Progress - December 2017 - Stay the Course
Quality Progress - December 2017 - 49
Quality Progress - December 2017 - 50
Quality Progress - December 2017 - 51
Quality Progress - December 2017 - 52
Quality Progress - December 2017 - 53
Quality Progress - December 2017 - Maintenance Makeover
Quality Progress - December 2017 - 55
Quality Progress - December 2017 - 56
Quality Progress - December 2017 - 57
Quality Progress - December 2017 - 58
Quality Progress - December 2017 - 59
Quality Progress - December 2017 - Confronting Confusion
Quality Progress - December 2017 - 61
Quality Progress - December 2017 - 62
Quality Progress - December 2017 - 63
Quality Progress - December 2017 - 64
Quality Progress - December 2017 - 65
Quality Progress - December 2017 - Standard Issues
Quality Progress - December 2017 - 67
Quality Progress - December 2017 - 68
Quality Progress - December 2017 - 69
Quality Progress - December 2017 - Statistics Spotlight
Quality Progress - December 2017 - 71
Quality Progress - December 2017 - 72
Quality Progress - December 2017 - 73
Quality Progress - December 2017 - Marketplace
Quality Progress - December 2017 - 75
Quality Progress - December 2017 - Footnotes
Quality Progress - December 2017 - 77
Quality Progress - December 2017 - 78
Quality Progress - December 2017 - 79
Quality Progress - December 2017 - Try This Today
Quality Progress - December 2017 - cover3
Quality Progress - December 2017 - cover4
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