A business philosophy & strategy adopted by
companies who are recognized leaders in
world class quality.
A Fact based decision making. An integrated
part of a management system.
A Customer focused determination (Customer
“critical-to-quality” factors) where we should
focus our quality improvements.
Continuous improvement methodology used to
improve business processes and products.
Utilisation of powerful statistical tools.
Statistical measure of process capability.
D M A I C
define measure analyse improve control
Understand Measure the Analyse the Improve the Control and
what defects and data and process to monitor the
customer map process discover root remove root improvement.
requires, operation. causes of causes of
define the defects. defects.
Measure Analyse Improve Control
1 Customer requirements 2 Process flow 3 Potential
VOC (Voice of analysis First pass yield
CTQ tree Tree diagram
The purpose of business is to
create and keep a customer.
Peter F. Drucker
Define Analyse Improve Control
4 Refined project definition 5 Capable Measurement system 6 Data collection
oparational data collection process
definition plan capability
Gage R&R interviews
with continious data
discrete vs. with discrete data variation
continuous test on
using histogram normal
measurable Minitab Gage R&R for distribution
specification transactional processes
commitment of diagram process offset
distribution organization control charts
In God we trust,
all others bring data.
William Edwards Deming
American Statistician, 1900-1993
Define Measure Improve Control
7 Evaluation of potential X 8 Filtering of red X1 … X7
Y data Chi-Square test
Anderson Darling test
Brainstorming Confidence interval Man-Whitney test
FMEA Benchmarking Wilcoxon test
The structure of a system tends
to mirror the structure of the
group producing it.
April 1968, Datamation
Define Measure Analyse Control
9 Find Major X 10 Optimize adjustment for X
and verifying system optimization
design of experiments
solution refinement solution testing
Nothing is more difficult to carry
out, nor more doubtful of
success, nor more dangerous to
handle than to initiate a new
order of things.
Define Measure Analyse Improve
14 Controlled process
11 Process tolerances 13 Capable process project
12 Capable measurement system improved
tolerances Gage R&R suboptimal X feedback
for X values control process
buffering of Y-values; management
Y tolerance limits optimal plan
buffering of X-values; process Out of Control
X controll limits monitoring Action Plan MPSB
process Poka Yoke FMEA
control charts Audit
Control your own destiny or
someone else will.
Edmund Gröpl, www.team-kompetenz.de
CTQ tree (Critical-to-Quality)
requirement topic CTQs measurement goal
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