-A-
Analysis
of Means (ANOM): An approach to statistically compare the
means of individual groups to the grand mean.
Analysis
of Variance: A procedure to test statistically the equality
of means of discrete factor inputs.
Attribute
Data: The phrase used to refer to counted (discrete) data,
especially when counting the number of defective items or the number
of defects per item.
Attribute
Response: Information appraised in terms of whether a characteristic
or property does or does not exist. It may be expressed as a noncompliance
rate or proportion.
Autocorrelation:
In time series analyses, the correlation between values and previous
values of the same series.
-B-
Balanced scorecard (the): The balanced scorecard (Kaplan
and Norton, 1992) tracks business organizational functions in the
areas of fi nancial, customer, and internal business process, and
learning and growth. In this system, an organization’s
vision and strategy lead to the cascading of objectives, measures,
targets, and initiatives throughout the organization. This book
describes issues with this system and an alternative IEE system
that overcomes these shortcomings.
Baseline:
Beginning information from which a response change is assessed.
Black
belts (BBs): Six Sigma and IEE practitioners who typically
receive four weeks of training over four months. It is most desirable
that black belts are dedicated resources; however, many organizations
utilize part-time resources. During training, black belt trainees
lead the execution of a project that has in class report-outs and
critiques. Between training sessions black belt trainees should
receive project coaching, which is very important for their success.
They are expected to deliver high-quality report-outs to peers,
champions, and executives. Upon course completion, black belts are
expected to continue delivering financial beneficial projects; for
example, 4–6 projects per year with fi nancial benefi ts of
$500,000–1,000,000. Blackbelts can mentor green belts.
Black
box: Describes a system where the interior operations are
not known.
BPIE:
See Business process improvement event
system.
Burning
platform: A term used to describe a sense of urgency; for
example, the organization had a burning platform to improve their
on-time delivery or they would loose their major customer’s
business.
Business
process improvement event (BPIE) system: A system for identifying
and timely resolving reoccurring problems. The resolution for these
issues could lead to a simple agree-to procedure change, a DMADV
design project, or P-DMAIC process improvement project.
-C-
Capability/performance metric: See Process capability/performance
metric.
Cause-and-effect
diagram (C&E diagram): This technique, sometimes called
an Ishikawa diagram or fi shbone diagram, is useful in problem solving
using brainstorming sessions. With this technique, possible causes
from such sources as materials, equipment, methods, and personnel
are typically identified as a starting point to begin the discussion.
Cause
and Effect Matrix: A tool used to help quantify team consensus
on relationships thought to exist between key input and key output
variables. The results lead to other activities such as an FMEA,
creating multi-vari charts, doing an ANOVA, regression analysis
or DOE.
Champions:
Executive level managers who are responsible for managing and guiding
the Lean Six Sigma or IEE deployment and its projects.
Collins’s
three circles:
1. What can you do to be the best in the world?
2. What drives your economic engine?
3. What are you deeply passionate about? (Collins, 2001)
Common
cause: Natural or random variation that is inherent in
a process over time, affecting every outcome of the process. If
a process is in control, it has only common cause variation and
can be said to be predictable. When a process experiences common
cause variability but does not meet customer needs it can be said
that the process is not capable. Process or input variable change
is needed to improve this situation; that is, this metric is creating
a pull for project creation.
Continuous
data (Variables data): Data that can assume a range of
numerical responses on a continuous scale, as opposed to data that
can assume only discrete levels.
Confidence
Interval: An interval computed from sample values. Intervals
so constructed will straddle the estimated parameter a certain percentage
of the time in repeated sampling.
Continuous
Response: A response is said to be continuous if any value
can be taken between limits. Examples include weight, distance,
and voltage.
Control:
The term in control or predictable is used in process control charting
to describe when the process indicates that there are no special
causes. Out of control indicates that there is a special cause or
the process is unpredictable.
Control
chart: A procedure used to track a process with time for
the purpose of determining if common or special causes exist.
Corrective
action: Process of resolving problems.
Cost
of doing nothing differently (CODND): COPQ within Six Sigma
includes not doing what is right the fi rst time, which can encompass
issues such as scrap, reworks, and meetings with no purpose. IEE
texts describe the cost of doing nothing differently (CODND), which
has even broader costing implications than COPQ.
Cost
of poor quality (COPQ): Traditionally, cost of quality
issues have been given the broad categories of internal failure
costs, external failure costs, appraisal costs, and prevention costs.
See Glossary description for cost of doing nothing
differently.
Cp:
A process capability index metric used to specify how well
a process is performing relative to customer requirements or specifications.
It is affected by the variation in the process relative to its specification.
A large number indicates the process has less process variability
relative to the width of the specification.
Cpk:
A process capability index metric used to specify how well a process
is performing relative to customer requirements or specifications.
It is affected by both the variation in the process and by how well
centered that variation is within the specification. A larger number
indicates the process is performing better.
Customer:
Someone for whom work or a service is performed. The end user of
a product is a customer of the employees within a company that manufactures
the product. There are also internal customers in a company. When
an employee does work or performs a service for someone else in
the company, the person who receives this work is a customer of
this employee.
-D-
Dashboard: See Scorecard.
Days
Sales Outstanding (DSO): In general, the average number
of days it takes to collect revenue after a sale has been made.
In the example in the text, it is the average number of days before
or after the due date that a payment is received.
Defect:
A nonconformity or departure of a quality characteristic from its
intended level or state.
Defective:
A nonconforming item that contains at least one defect
or having a combination of several imperfections, causing the unit
not to satisfy intended requirements.
Deming,
Dr. W. Edwards: As an American statistician, Dr. Deming
is known for his top management teachings in Japan after World War
II. Dr. Deming made a signifi cant contribution to Japan becoming
renown for its high-quality, innovative products.
Design
for Integrated Enterprise Excellence (DFIEE): A process
used when developing new products, services, processes, or information
technology (IT) projects. This development is efficient and effective
with a focus on up-front understanding of customer requirements.
IEE uses a DMADV process for DFIEE execution.
Design
of experiments (DOE): Experiment methodology according
to which factor levels are assessed in a fractional factorial experiment
or full factorial experiment structure.
Discrete
data (Attribute data): The presence or absence of some
characteristic in each device under test; for example, proportion
nonconforming in a pass/fail test.
DMAIC:
Defi ne–measure–analyze–improve–control
Six Sigma roadmap.
DMADV:
Defi ne–measure–analyze–design–verify DFIEE/DFSS
roadmap.
DOE
(Design of Experiments): Experiment methodology in which
factor levels are assessed in a fractional factorial experiment
or in a full factorial experiment structure.
DMAIC:
The five phases of Six Sigma methodology: Define, measure, analyze,
improve and control.
Dot
plot: A plot of symbols that represent individual observations
from a batch of data.
DPMO
(Defects per Million Opportunities): Number of defects
that, on average, occur in one million opportunities. Care should
be taken to assure that all defects, including touch-ups and reworks
that previously may not have been recorded are included in this
calculation. Also important is an agreed-upon standard method of
counting opportunities.
Drill-down:
A transition from general category information to more specific
details by moving through a hierarchy.
-E-
E-DMAIC (Roadmap): An IEE enterprise defi ne–measure–analyze–
improve–control roadmap, which contains among other things
a value chain measurement and analysis system where metric improvement
needs can pull for project creation.
Enron
effect: At the beginning of the 21st century, the executive
management style in Enron and others companies lead to the downfall
of these companies and executives spent time behind bars. In Enron,
executive management had to do whatever it took to meet their numbers.
Enron lacked metrics that gave a true picture of what was happening.
This resulted in a smoke and mirror system which had integrity issues
relative to the handling of business challenges. In addition, this
system encouraged executive management to have no respect for either
the financial or general well being of others, inside or outside
the company. The catastrophic result of this management style is
the Enron effect.
Enterprise
cascading measurement methodology (ECMM): A system where
meaningful measurements are statistically tracked over time at various
functional levels of the business. This leads to a cascading and
alignment of important metrics throughout the organization.
Enterprise
improvement plan (EIP): A project drill-down strategy that
follows: goal–strategies–high-potential area–projects.
Enterprise
process management (EPM): Rather than having governance
model that addresses initiatives as separate entities, in IEE a
value chain EPM function can be created that orchestrates this system.
The EPM function is responsible for integrating, overseeing, and
improving the execution of these processes utilizing an E-DMAIC
roadmap.
EPM:
See Enterprise process management.
-F-
50-Foot-Level Metric (SM): A low-level metric or input
to a process that can affect the response to the output, or 30-000-Foot-Level
metric.
FMEA
(Failure Mode and Effect Analysis): A proactive method
of improving reliability and minimizing failures in a product or
service. It is an analytical approach to preventing problems in
a process. For a process FMEA, organizational wisdom is collected
to list what can go wrong at each step of a process that could cause
potential failures or customer problems. Each item is evaluated
for its importance, frequency of occurrence, and probability of
detecting its occurrence. This information is used to prioritize
the items that most need improving. These are then assigned a corrective
action plan to reduce their risk.
Fire-fighting:
The practice of giving focus to fi xing the problems of
the day or week. The usual corrective actions taken in firefighting,
such as tweaking a stable process, do not create any longterm fixes
and may actually cause process degradation.
-G-
Gage R&R (Repeatability and Reproducibility): A tool
used in a Measurement System Analysis. It is the evaluation of measuring
instruments to determine their capability to yield a precise response.
It determines how much of the observed process variation is due
to measurement system variation. Gate repeatability is the variation
in measurements using the same measurement instrument several times
by one appraiser measuring the identical characteristic on the same
part. Gage reproducibility is the variation in the average of measurements
made by different appraisers using the same measuring instrument
when measuring the identical characteristics on the same part.
Gantt
chart: A bar chart that shows activities as blocks overtime.
A block’s beginning and end correspond to the beginning and
end date of the activity.
Governance,
corporate: The system by which business corporations are
directed and controlled. The corporate governance structure specifi
es the distribution of rights and responsibilities among different
participants in the corporation, such as the board, managers, shareholders
and other stakeholders, and spells out the rules and procedures
for making decisions on corporate affairs. By doing this, it also
provides the structure
through which the company objectives are set, and the means of attaining
those objectives and monitoring performance. Organization for Economic
Cooperation and Development (OECD), April 1999.
Governance
Model: The result from the people, committees, departments,
and all others who make up a body for the purpose of administering
something.
Green
belts (GBs): Part-time Six Sigma or IEE practitioners who
typically receive two weeks of training over two months. Their primary
focus is on projects that are in their functional area. The inference
that someone becomes a green belt before a black belt should not
be made. Business and personal needs and requirements should infl
uence the decision whether someone becomes a black belt or green
belt. If someone’s job requires a more in-depth skill set,
such as the use of design of experiments, that person should be
trained as a black belt. Also, at deployment initiation, black belt
training should be conducted first, so that this additional skill
set can be used when coaching others.
-H-
Hidden factory: Reworks within an organization that have
no value and are often not considered within the metrics of a factory.
Histogram:
A graphical representation or bar graph of the sample relative frequency
distribution describing the occurrence of grouped items. This graph
summarizes and displays the distribution of data in an easier-to-grasp
form than tables of data.
Hoshin
kanri: Japanese name for policy deployment. Used by some
Lean companies to guide their operational strategy.
Hypothesis:
A tentative statement, which has a possible explanation to some
event or phenomenon. Hypotheses are not a theoretical statement.
Instead, hypotheses are to have a testable statement, which might
include a prediction.
-I-
IEE: See Integrated Enterprise Excellence.
IEE
scorecard/dashboard metric reporting process:
- Assess process
predictability.
- When the
process is considered predictable, formulate a
prediction statement for the latest region of stability. The
usual reporting format for this statement is as follows:
- When
there is a specifi cation requirement: nonconformance
percentage or defects per million opportunities
(DPMO).
- When
there are no specifi cation requirements: median
response and 80 percent frequency of occurrence
rate.
IEE
Workout: See Workout (IEE).
In control:
The description of a process where variation is consistent
over time; that is, only common causes exist. The process is predictable.
Individuals
control chart: A control chart of individual values where
variability between subgroups affects the calculated upper and lower
control limits; that is, the width between the upper and lower control
limits increases when there is more variability between subgroups.
When plotted individuals chart data is within the upper and lower
control limits and there are no patterns, the process is said to
be stable and typically referenced as an in control process. In
IEE, this common cause state is referenced as a predictable process.
Control limits are independent of specifi cation limits or targets.
Information
technology: Computer systems and applications, which involves
development, installation, and/or implementation.
Infrequent
sub-grouping/sampling: Traditionally, rational subgrouping
issues involve the selection of samples that yield relatively homogeneous
conditions within the subgroup for a small region of time or space,
perhaps five in a row. For an x and R chart, the within-subgroup
variation defi nes the limits of the control chart on how much variation
should exist between the subgroups. For a given situation, differing
subgrouping methodologies can dramatically affect the measured variation
within subgroups, which in turn affects the width of the control
limits. For the high-level metrics of IEE, we want infrequent subgrouping/sampling,
so that short-term variations caused by KPIV perturbations are viewed
as common cause issues; that is, typical process variability is
to occur between subgroups. This type of control chart can reduce
the amount of fi refi ghting in an organization. However, this does
not mean that a problem does not exist within the process. Volume
3 describes some approaches to view the capability/performance of
our process, or how well the process meets customer specifications
or overall business needs. When process capability/performance improvements
are needed for these metrics, we can initiate an IEE project; that
is, IEE projects are pulled into the system, as they are needed
by the metrics.
Examples
of infrequent subgrouping/sampling are:
- ROI was
tracked monthly over the last three years on an
individuals control chart.
- One paid
invoice was randomly selected daily and the difference
between payment receipt date and due date was
tracked for the last year using an individuals control chart,
where the data had a lognormal transformation).
- The mean
and standard deviation (log of standard deviation
was plotted) for all DSO invoices collected were tracked
for the last year using individuals control charts, where approximately
the same number of invoices was received and
tracked weekly.
- Daily, the
number of defects was divided by the opportunities
and plotted on an individuals control chart with an
appropriate transformation, where approximately the same
number of opportunities occurred daily.
Integrated
Enterprise (process) Excellence (IEE, I double E): Integrated
Enterprise Excellence (IEE) is a sustainable business management
governance system, which integrates business scorecards, strategies,
and process improvement, so that organizations move toward the three
Rs of Business. (Everyone is doing the Right things and doing them
Right at the Right time.) IEE provides the framework for innovation
and continual improvement, which goes beyond Lean Six Sigma’s
project-based defect and waste reduction methods. The existence
and excellence of a business depends on more customers and cash;
that is, E = MC2. As a business way of life, IEE provides
the organizational orchestration to achieve more customer and cash.
The IEE implementation roadmap provides direction on the creation
of an enterprise process system in which organizations can significantly
improve both customer satisfaction and their bottom line. The techniques
help manufacturing, development, and service organizations become
more competitive and/or move them to new heights. IEE is a structured
approach that guides organizations through the tracking and attainment
of organizational goals. IEE integrates enterprise process measures
and improvement methodologies with tools such as Lean and theory
of constraints (TOC) in a never-ending pursuit of excellence. IEE
becomes an enabling framework, which integrates, improves, and aligns
with other initiatives, such as total quality management (TQM),
ISO 9000, Malcolm Baldrige Assessments, and the Shingo Prize.
Inventory
turns: The number of times that a company’s inventory
cycles or turns over per year.
ISO-9000:
Consists of individual but related international standards on quality
management and quality assurance. Developed to help companies effectively
document the elements to be implemented in order to maintain an
efficient quality system. It is a requirement often placed on manufacturing
companies. The basic idea behind ISO-9000 methodology is that you
document what you do, then you do what you described in the documentation.
During an ISO-9000 certification process, the examining registrar
will audit your company to confirm that you are following the standard.
If you re, you can be certified. An updated version is ISO-9000:2000,
which requires that you demonstrate improvements are being made
within your processes.
IT:
See Information technology.
-J-
Jim Collins’s three circles: See Collins’s
three circles.
-K-
Kaizen Event (or Kaizen Blitz): An intense short-term project
that gives focus to improve a process. Substantial resources are
committed during this event; for example, Operators, Engineering,
Maintenance, and others are available for immediate action. A facilitator
directs the event, which usually includes training followed by analysis,
design, and area rearrangement.
Kanban:
Pulling
a product through the production process. This method of manufacturing
process-flow-control only allows movement of material by pulling
from a preceding process. Inventory is kept low. Then quality errors
are detected, there is less product affected.
KPIV
(Key Process Input Variable): Factors within a process
correlated to an output characteristic(s) important to the internal
or external customer. Optimizing and controlling these is vital
to the improvement of the KPOV.
KPOV
(Key Process Output Variable): Characteristic(s) of output
of a process that are important to the customer. Understanding what
is important to the internal and external customer is essential
to identifying KPOVs.
-L-
Law of physics: A physical law, or a law of nature, that
is considered true.
Lean:
Improving operations and the supply chain with an emphasis on the
reduction of wasteful activities like waiting, transportation, material
hand-offs, inventory, and overproduction.
Lean
Enterprise: Focusing on the identification and reduction
of waste throughout the entire organization and involving both suppliers
and customers in the effort.
Lean
Manufacturing: A manufacturing process involving tools
such as value-stream mapping and workflow diagrams without considering
either supplier or customer processes. The methodology used to implement
the Lean production philosophy.
Level
Five System: Jim Collins (2001) describes in Good to Great
a level five leader as someone who is not only great when they are
leading an organization but who enables the organization to remain
great after they leave it. I describe the level-fi veleader-created
legacy as being a Level Five System.
-M-
MC2: More Customers and Cash
Malcolm
Baldrige Award: An award that recognizes yearly up to five
companies that demonstrate outstanding quality management systems.
The award, started in 1986, would later be known as the Malcolm
Baldrige National Quality Improvement Act which was created under
the direction of ASQ and the National Institute of Standards and
Technology. The Act established a national award that recognizes
total quality management in American industry.
Master
black belts (MBBs): Black belts who have undertaken two
weeks of advanced training and have a proven track record delivering
results through various projects and project teams. They should
be a dedicated resource to the deployment. Before they train, master
black belts need to be certifi ed in the material that they are
to deliver. Their responsibilities include coaching black belts,
monitoring team progress, and assisting teams when needed.
Mean:
The mean of a sample is the sum of all the responses divided
by the sample size.
Measurement
Systems Analysis: Analysis of the complete process of obtaining
measurements. This includes the collection of equipment, operations,
procedures, software and personnel that affects the assignment of
a number to a measurement characteristic. Includes, but is not limited
to, Gage R&R.
Median:
For a sample, the number that is in the middle when all observations
are ranked in magnitude. For a population, the value at which the
cumulative distribution function is 0.5.
Metric:
A measurement that quantifi es a particular characteristic.
Mini
Kaizen: Recognizes that the best expert for a job is the
person who does the job. Everyone is encouraged to make small improvements
that are within their power to implement. The collection of thousands
of small improvements can have a major impact. Its implementation
requires both conscious and subconscious day-to-day and minute-by-minute
thinking about improvements by all employees. Required also is that
these employees possess this type of thinking skills.
Muda:
A Japanese term indicating efforts that do not add value (waste).
some categories of muda are defects, over production or excess inventory,
idle time and poor layout.
Multi-vari
chart: A chart that displays the variance within units,
between units, between samples and between lots. It is useful in
detecting variation sources within a process.
-N-
Nonconformance:
Failure to meet specifi cation requirement.
-O-
Organizational Wisdom: Wisdom about a process that comes
intuitively from past experiences of team members. It is used to
provide possible solutions to problems, which are then evaluated
by appropriate analysis tools.
Out
of Control: Control charts exhibit special causes conditions.
The process is not predictable.
-P-
Pareto chart: A graphical technique used to quantify problems
so that effort can be expended in fi xing the “vital few”
causes, as opposed to the “trivial many.” Named after
Vilfredo Pareto, an Italian economist.
Pareto
principle: 80 percent of the trouble comes from 20 percent
of the problems, that is, the vital few problems.
Passive
Analysis: Data collected and analyzed as the process is
currently performing, without adjustments to the process, to determine
KPIVs.
PDCA:
See Plan do check act.
P-DMAIC
(Roadmap): An IEE project defi ne–measure–analyze–improve–control
roadmap for improvement project execution, which contains a true
integration of Six Sigma and Lean tools.
Plan
do check act (PDCA): Frequently referred to as the Deming
cycle or Shewhart cycle. Sometimes the check step is replaced with
a study step; that is, PDSA. PDCA has the following components:
Plan–Recognize a need for change that establish objectives
and process for delivering desired results; Do–Implement change
that is to be assessed; Check–study results and identify lessons
learned; Act–Use lessons learned to take appropriate action.
If change was not satisfactory repeat the process.
Poka-Yoke:
A Japanese term indicating a mechanism that either prevents
a mistake from occurring or makes a mistake obvious at a glance.
Population:
Statistically a population is a group of data from a single
distribution. In a practical sense, a population could also be considered
to be a segment or a group of data from a single source or category.
In the process of explaining tools and techniques, multiple populations
may be discussed as originating from different sources, locations,
or machines.
PPM
(Parts per Million Opportunities): A defect-per-unit calculation
giving additional insight into a process by including the number
of opportunities for failure. When this is done, the metric is DPMO.
Care must be taken in estimating the number of opportunities for
defects in a process.
Predictable
process: A stable, controlled process where variation in
outputs is only caused by natural or random variation in the inputs
or in the process itself.
Preventive
action: An action that is taken to eliminate from reoccurrence
a potential nonconformity cause or other undesirable situation.
Probability
Distribution: A formula, table or graph providing the probability
associated with each value of the random variable if the random
variable is discrete or providing the fraction of measurement in
the population falling in specific intervals if it is continuous.
Probability
plot: Data are plotted on a selected probability paper
coordinate system to determine if a particular distribution is appropriate
(i.e., the data plot as a straight line) and to make statements
about percentiles of the population. The plot can be used to make
prediction statements about stable processes.
Process
capability/performance metric: IEE uses the term process
capability/performance metric to describe a process’s predictive
output in terms that everyone can understand. The process to determine
this metric is:
- An infrequent
subgrouping and sampling plan is determined,
so that the typical variability from process input factors
occurs between subgroups, for example, subgroup by
day, week, or month.
- The process
is analyzed for predictability using control
charts.
- For the region
of predictability, the noncompliant proportion
or parts per million (ppm) is estimated and reported. If
there are no specifi cations, the estimated median response
and 80 percent frequency of occurrence is reported.
Process
flow diagram (chart): Path of steps of work used to produce
or do something.
Pull:
A Lean term that results in an activity when a customer or downstream
process step requests the activity. A homebuilder that builds houses
only when an agreement is reached on the sale of the house is using
a pull system. See push.
Pull
for project creation: This term is derived from the Lean
term, pull. An IEE deployment objective is that performance metric
ownership is assigned through the business value chain, where metric
tracking is at the 30,000-foot-level. In the E-DMAIC process, the
enterprise is analyzed as a whole to determine what performance
metrics need improvement and by how much so that whole organizational
goals can be met. These metric improvement needs would then create
a pull for project creation. See push for project creation.
Push:
A Lean term that results in an activity that a customer
or downstream process step has not specifi cally requested. This
activity can create excessive waste and/or inventory. A homebuilder
that builds houses on the speculation of sale is using a push system.
If the house does not sell promptly upon completion, the homebuilder
has created excess inventory for his company, which can be very
costly. See pull.
Push
for project creation:
This term is derived from the Lean term, push. Lean Six Sigma deployments
create and execute projects that are meant to be benefi cial to
the business. However, when assessing the typical Lean Six Sigma
project selection process, we note that either a deployment steering
committee or some level of management selects projects from a list
that they and others think are important. For this type of deployment,
there is often a scurry to determine a project to work on during
training. This a push for project creation; that is, people are
hunting for projects because they need to get certified or meet
a certain goal. With this deployment system, there can be initial
successes since agree-to low hanging fruit projects can often be
readily identifi ed and provide significant benefits; however, this
system of project determination is not typically long lasting. After
some period of time, people have a hard time defi ning and/or agreeing
to what projects should be undertaken. In addition, this project
creation system does not typically look at the system as a whole
when defining projects to undertake. This system can lead to suboptimization,
which could be detrimental enterprise as a whole. Finally, this
Lean Six Sigma deployment system typically creates a separate function
entity that manages the deployment, which is separate from operational
scorecards and functional units. In time, people in these functions
can be very visible on the corporate radar screen when downsizing
forces occur or there is a change in executive management, even
though the function has been claiming much past success. See pull
for project creation.
-R-
Radar chart: A chart that is sometimes called a spider
chart. The chart is a two-dimensional chart of three or more quantitative
variables represented on axes originating from the same point.
Regression
or Regression Analysis: A defined process for quantifying
and modeling the output of a process relative to its input variables.
It estimates the relationship between inputs and outputs of a process
and produces mathematical model of that relationship. Its use can
lead to a better understanding of the critical factors controlling
ht equality of the process output.
Robust
Process: A process with output variability that is not
sensitive to the normal variation from its input variables.
Rolled
throughput yield (RTY):
For a process that has a series of steps, RTY is the product of
yields for each step.
Root
cause analysis: A study to determine the reason for a process
nonconformance. Removal or correction of the root cause eliminates
future nonconformance from this source.
-S-
Satellite-Level®:
Used to describe a high level IEE business metric that has infrequent
subgrouping/sampling so that short-term variations, which might
be caused by the variation key input variables, will result in control
charts that view these perturbations as common cause variations.
This metric has no calendar boundaries and the latest region of
stability can be used to provide a predictive statement of the future.
Scorecard:
A scorecard is to help manage an organization’s performance
through the optimization and alignment of organizational units,
business processes, and individuals. A scorecard can also provide
goals and targets, which help individuals understand their organizational
contributions. Scorecards span the operational, tactical, and strategic
business aspects and decisions. A dashboard displays information
so that an enterprise can be run effectively. A dashboard organizes
and presents information in a format that is easy to read and interpret.
Shewhart
control chart: Dr. Shewhart is credited with developing
the standard control chart test based on 3s limits to separate the
steady component of variation from assignable causes.
Shingo
prize: Established in 1988, the prize promotes awareness
of Lean manufacturing concepts and recognizes United States, Canada,
and Mexico companies that achieve world-class manufacturing status.
The philosophy is that world-class business performance may be achieved
through focused core manufacturing and business process improvements.
Sigma:
The Greek letter (s) that is often used to describe the standard
deviation of data.
Sigma
level or sigma quality level: A quality that is calculated
by some to describe the capability of a process to meet specification.
A six sigma quality level is said to have a 3.4 ppm rate. Pat Spagon
from Motorola University prefers to distinguish between sigma as
a measure of spread and sigma used in sigma quality level (Spagon,
1998).
SIPOC
(supplier-input-process-output-customer): Is a tool that
describes the events from trigger to delivery at the targeted process.
Six
Sigma: A term coined by Motorola that emphasizes the improvement
of processes for the purpose of reducing variability and making
general improvements.
S.M.A.R.T:
Not everyone uses the same letter descriptors for SMART. My preferred
descriptors are italicized in the following list: S: specific, significant,
stretching; M: measurable, meaningful, motivational; A: agreed upon,
attainable, achievable, acceptable, action-oriented, actionable;
R: realistic, relevant, reasonable, rewarding, results-oriented;
T: time-based, timely, tangible, trackable.
Smarter
Six Sigma Solutions (S4): The term used to describe the
wise and unique application of statistical techniques to creating
meaningful measurements and effective improvements.
Smarter
Six Sigma Solutions assessment (S4 assessment): A term
introduced in the first edition Implementing Six Sigma (Breyfogle,
2003). The methodology uses statistically based concepts while determining
the best question to answer from the point of view of the customer.
Assessment is made to determine if the right measurements and the
right actions are being conducted. This includes noting that there
are usually better questions to ask to protect the customer than
“What sample do I need?” or “What one thing should
I do next to fix this problem?” IEE resolution may involve
putting together what are traditionally considered as separate statistical
techniques in a smart fashion to address various problems.
Special
Cause: Variation in process from a cause that is not an
inherent part of that process. That is, it is not a common cause.
Stakeholders:
Those people or organizations who are not directly involved with
project work but are affected its success or can influence its results.
They may be process owners, managers affected by the project, and
people who work in the studied process. Stakeholders also include
internal departments, which support the process, fi nance, suppliers,
and customers.
Standard
Deviation: A mathematical quantity that describes the variability
of a response.
Statistical process control (SPC): The
application of statistical techniques in the control of processes.
SPC is often considered to be a subset of SQC, where the emphasis
in SPC is on the tools associated with the process but not on product
acceptance techniques.
Statistical quality control (SQC):
The application of statistical techniques in the control of quality.
SQC includes the use of regression analysis, tests of signifi cance,
acceptance sampling, control charts, distributions, and so on.
Stock options: A stock option is
a specific type of option with a stock as the underlying instrument;
that is, the security that the value of the option is based on.
A contract to buy is known as a call contract, while a contract
to sell is known as a put contract.
Stories:
An explanation for the up-and-down from previous quarter or yearly
scorecard/dashboard metrics. This is not dissimilar to a nightly
stock market report of the previous day’s activity, where
the television or radio reporter gives a specific reason for even
small market movements. This form of reporting provides little,
if any, value when it comes to making business decisions for a data-driven
company.
Sub-grouping:
Traditionally, rational sub-grouping issues involve the selection
of samples that yield relatively homogeneous conditions within the
subgroup for a small region of time or space, perhaps five in a
row. Hence, the within-subgroup variation defines the limits of
the control chart on how much variation should exist between the
subgroups. For a given situation, differing sub-grouping methodologies
can dramatically affect the measured variation within subgroups,
which in turn affects the width of the control limits. For the high-level
metrics of IEE, we want infrequent subgrouping/sampling, so that
shortterm KPIV perturbations are viewed as common cause issues.
A 30,000-foot-level individuals control chart, which is created
with infrequent sub-grouping/sampling, can reduce the amount of
fi refi ghting in an organization. However, this does not mean that
a problem does not exist within the process. IEE describes approaches
to view the process capability/performance, or how well the process
meets customer specifications or overall business needs. When improvements
are needed to a process capability/performance metric, we can create
an IEE project that focuses on this need. IEE projects have a pull
for project creation system when metric improvements are needed.
-T-
The balanced scorecard: See balanced scorecard (the).
Theory
of Constraints (TOC): Constraints can be broadly classified
as being internal resource, market, or policy. The outputs of a
system are a function of the whole system, not just individual processes.
System performance is a function of how well constraints are identifi
ed and managed. When we view a system as a whole, we realize that
the output is a function of the weakest link. The weakest link of
the system is the constraint. If care is not exercised, we can be
focusing on a subsystem that, even though improved, does not impact
the overall system output. We need to focus on the orchestration
of efforts so that we optimize the overall system, not individual
pieces. Unfortunately, organization charts lead to workfl ow by
function, which can result in competing forces within the organization.
With TOC, systems are viewed as a whole and work activities are
directed so that the whole system performance measures are improved.
30,000-foot-level:
A Six Sigma KPOV, CTQ, or Y variable response that is used in IEE
to describe a high-level project or operation metric that has infrequent
subgrouping/sampling so that short-term variations, which might
be caused by KPIVs, will result in charts that view these perturbations
as common-cause issues. It is not the intent of the 30,000-foot-level
control chart to provide timely feedback for process intervention
and correction, as traditional control charts do. Example 30,000-foot-level
metrics are lead time, inventory, defective rates, and a critical
part dimension. There can be a drill-down to a 20,000-footlevel
metric if there is an alignment; for example, the largest product
defect type. A 30,000-foot-level individuals control chart can reduce
the amount of fi refi ghting in an organization when used to report
operational metrics. As a business metric, 30,000-foot-level reporting
can lead to more efficient resource utilization and less playing
games with the numbers.
Three
Rs of business: Everyone doing the Right things and doing
them Right at the Right time.
Throughput,
TOC: The rate of generating money in an organization. This
is a financial value-add metric which equates to revenues minus
variable costs.
TOC:
See Theory of constraints.
TOC
throughput: See Throughput, TOC.
Total
quality management (TQM): A management program, which works
on continuous product or service improvements through workforce
involvement.
TQM:
See Total quality management.
-V-
Value chain: Describes flowchart fashion both primary
and support organizational activities and their accompanying 30,000-foot-level
or satellite-level metrics. An example of primary activity flow
is: develop product – market product – sell product
– produce product – invoice/collect payments –
report satellite-level metrics. Example support activities include
IT, finance, HR, labor relations, safety and environment, and legal.
Visual
factory: Management by sight. Visual factory involves the
collection and display of real-time information to the entire workforce
at all times. Work cell bulletin boards and other easily-seen media
might report information about orders, production schedules, quality,
delivery performance, and financial health of business.
Voice
of the customer (VOC): The identifi cation and prioritization
of true customer needs and requirements, which can be accomplished
through focus groups, interviews, data analyses, and other methods.
Voice
of the process (VOP): A quantification of what the process
delivers. A voice of the process to voice of the customer needs
assessment can identify process improvement focus areas; for example,
a 30,000-foot-level assessment indicates an 11 percent delivery-time
nonconformance rate.
-W-
WIP: A general description for inventory that is
being processed within an operation or is awaiting another operation.
Work
in process (WIP): See WIP.
Work
in progress (WIP): See WIP.
Workout
(IEE): An IEE workout is a week-long concentrated effort
to build the E-DMAIC framework; that is, a kaizen event to create
the E-DMAIC framework. Typically on Monday there is a one-day executive
workshop, which among other things describes IEE and its structure.
On Tuesday through Wednesday the facilitator works with an IEE in-house
technical team and others to build the E-DMAIC framework with its
process drilldowns. On Friday, a two-hour report out of the customization
of the E-DMAIC system, as described on Monday, is presented to the
executive team that attended the Monday session. This presentation
will include, among other things, a comparison of a sample of their
30,000-foot-level metric report outs with their current reporting
methods. After the week-long session, the workout facilitator will
continue work with the IEE in-house technical team to continually
refi ne their E-DMAIC system.
-Y-
Yellow Belts (YBs): Process improvement team members
who typically receive three days of training, helping their effectiveness
in the participation of project executions, such as data collection,
identifying voice of the customer, and team meetings.
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