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TRANSFORMING THE IS/IS-NOT ANALYSIS INTO A
MULTI-BENEFIT TOOL
by Dave Wetzel, Ph. D.
With a structure to identify geography, service or
product, process, and the main project metric, the
"is/is-not analysis" can be one of the most useful
tools to sharpen the definition and scope of a Six
Sigma project. (Table 1) It also has benefits for
other DMAIC phases.
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Specifically, the is/is-not analysis:
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Creates a geographically searchable project
problem statement
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Describes what the project will and will not
address
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Identifies internal and external benchmarking
opportunities
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Identifies potential control groups for "better"
research methods
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Identifies project replication opportunities
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Identifies balanced metrics
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Protects against scope creep
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Differentiates between core and extended team
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Maintains team focus throughout all phases of
DMAIC
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Provides direction from/to external stakeholders
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Table 1: Is/Is Not Analysis |
| |
Is
|
Is Not
|
Is
Not Uses |
| Geographic |
|
|
External
Benchmarking
Internal Benchmarking &
Replication Opportunities |
Service or
Product |
|
|
Control
Groups &
Replication Opportunities |
| Process |
|
|
Process
Boundaries &
Replication Opportunities |
| Metric |
|
|
Balanced
metrics |
The column headed Is Not Uses
reminds the project team of the benefits and uses of
this analysis.
The is/is-not analysis should be
completed during or immediately after project
selection. This analysis validates the project and
creates a specific project problem statement. Think
of the analysis as a view from space that quickly
zooms directly down to the continent, country, city,
street and finally to the individual person walking
the street. The parallel is to zoom from the
company, division, plant, product, process and
metric to ensure that the project is scoped
correctly and is searchable.
Geographic
To begin, identify the company in
the first row of the Is column. Then list the
company's competitors in the corresponding Is Not
column. As shown in the Is Not Uses column, these
competitors represent potential external
benchmarking opportunities. In the Is column of the
second row, if appropriate, list the division or
country. Place other divisions or countries in the
Is Not portion. These represent potential internal
benchmarking opportunities for analysis and
potential replication opportunities. Continue
zooming in geographically until the specific plant,
city or department that the project applies to is
reached. Do not allow team members to default to
"others" as an answer to the Is Not side of the
analysis. They will regret this lack of rigor in the
Analyze phase. The tables below illustrate a service
or transactional example and a production or
manufacturing example.
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Table
2: Service or Transactional |
|
|
Is |
Is
Not |
Is
Not Uses |
| Geographic |
LED Company
Home Division
Stone, AZ Call Center
Customer Service Dept. |
PH, MBI…
Corporate or Education
Panama, Jersey City
Escalation Team |
Benchmark
Benchmark,
Replication, Share
Lessons Learned |
| Service or Product |
Computer
Desktop
Series D |
Mid-Range, Main Frame
Laptop,
Workstation, Printer
Series B or
C |
Potential
Replication
and Control Groups
|
| Process |
Greeting to
Closure |
Phone
Routing System, Audit |
Prior
Processes
Following Processes |
| Metric |
Decrease
Number of Repeat
Calls (50 +/- 9% to 10 +/- 5%) |
Call Time,
Satisfaction Index |
Balanced
Metrics and
Unintentional Benefits |
|
Table
3: Production or Manufacturing |
| |
Is |
Is
Not |
Is
Not Uses |
| Geographic |
TELZO Company
Auto Division
Newark, OH, Plant
Heat Treat Department |
Ford, GM,
Toyota, Nissan…
Chemical, Electronic…
Lexington, KY
Machining, Assembly |
Benchmark
Benchmark,
Replication, Share
Lessons Learned
|
| Service or Product |
Gears
Carriage
80 lb. |
Rack,
Pinions, Axles
Truck, Auto
60 lb., 40 lb. |
Potential Replication
and Control Groups |
| Process |
Line 4
Ovens (4), Transfer, Deburr, Grind,
Inspection |
Line 1-3
Grinding, Shipping |
Prior
Processes...
Following Processes... |
| Metric |
Increase
Rolled Throughput
Yield (70% – 90%) |
Cycle Time,
Dimensional
Indices |
Balanced metrics and
unintentional benefits |
Service or Product
In the first row of the service or
product section, enter the service category or
product family. In the subsequent rows narrow the
focus until a specific service or product is
identified. This activity represents a significant
opportunity to reduce scope. However, often there is
reluctance to do this because of prior direction
(large scope) or a directive to achieve a certain
amount of dollar savings.
There are several ways to address
these issues. If the project has been mandated with
a large scope, then a conversation with the Sponsor
and other stakeholders may be in order ti explain
how replication or multi-generational projects can
help achieve the mandatory dollar savings. Another
approach is to present the need to conduct good
research using control groups to more appropriately
identify or validate project improvements which
offer dollar savings. If the project team is
tackling its first project then the case for not
overwhelming the team must be made. The team is
learning a new methodology (DMAIC), new tools (and
methods) and new team dynamics.
Often, these explanations for
reduced scope are sufficient to ease concerns and
simultaneously to exceed dollar goals. It helps that
most teams consistently undervalue the potential
savings of their projects by two or three times the
final achieved savings (i.e., additional benefits
discovered, quick improvements, unexpected
replication opportunities).
Process
This section includes as many rows
as needed to drill down from the high-level process
to the appropriate sub-process to be improved. At
the very least, this section should identify the
first and last steps of that sub-process. To clearly
differentiate what is not within the project's
scope, the Is Not portion should identify the steps
that immediately precede and follow the steps to be
addressed. This naturally creates a boundary from
which core and extended team members can be
identified. Prior processes can be thought of as
suppliers of raw materials, data and information,
human resources and finances. The after process
steps indicate potential extended team members for
both internal and external customers.
Metric
This section should only include the
main project metric. A baseline and goal should be
included. Often, a challenge at this point is to
identify the amount of variation present and the
goal for reducing it. The Is Not side includes
potentially balanced metrics that are invaluable
during the Control phase and should be further
defined and documented in the Measure phase with a
rigorous data management plan.
Better Project Problem Statement,
Increased Success
A searchable problem statement is
revealed by looking at the Is side of the finished
analysis from the bottom-up. Start at the bottom of
the Is side and work up through metric, process,
product and geography. For the production or
manufacturing example, the result is:
"Increase rolled throughput yield
from 70 to 90 percent for the oven-to-inspection
process steps of Line 4 for the 80-pound carriage
gears manufactured in the heat treat department at
the Newark, Ohio, plant of the Auto Division of
TELZO Company."
Training and facilitating this
method in class with teams and/or project leaders
requires only a short explanation, usually provided
while they are filling in the form on flip chart
paper with big markers so all can see and share.
Alternatively, this analysis can be completed as
part of the project selection process to gain
clarity around a potential project. The is/is-not
analysis is a wonderful way to narrow the scope of
projects, increase chances for success, accelerate
projects and realize benefits sooner.
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