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It never ceases to amaze business experts how many companies just dive in to start
developing strategies and creating plans without any real rhyme or reason. Of course,
you probably haven't heard too much about companies like thesebecause they're
typically not very successful.
On the other hand, when you examine the business models and practices of the most
prominent, fastest-growing companies in the Fortune 500, you'll see a consistent
adherence to a common set of criteria for measuring, analyzing and improving overall
quality. These days, these levels of success can be tied directly to the principles
of Six Sigma.
What exactly is Six Sigma?
Six Sigma is not a secret corporate society or a fancy marketing slogan.
It's a highly disciplined set of business principles intended to guide companies
toward constant improvement in product quality and customer satisfaction.
With the globalization of business and faster access to information, product and
services, the "old ways" of doing business just don't apply. Today, customers conduct
business differently-and companies need to react quickly. Exceeding expectations
is rapidly becoming hard-wired into entire corporate cultures.
"Sigma" is a statistical term for measuring how far a given product varies from
perfection (driving towards six standard deviations between the mean and
the nearest specification limit). If you can measure the defects in a process, you
can strategically move to eliminate them. The goal: as close to zero defects as
possible.
Six Sigma can be approached on three levels:
Metrics. A quantifiable measurement, such as 3.4
Defects Per Million Opportunities (the level at which Six Sigma is achieved), let
you take into account product and process complexity. At the very least, consider
at least three opportunities for a physical part or component: one each for form,
fit and function.
One key metric group is CTQs (Critical to Quality), the key measurable product or
process characteristics whose performance standards or specification limits must
be met to satisfy customers. They align product design and improvement efforts with
customer expectations and requirements.
Methodology. This typically involves using process
roadmaps and problem-solving tools. The Six Sigma DMADV process (Define,
Measure, Analyze, Design, Verify) is intended to help you develop new processes
and products of Six Sigma quality. The Six Sigma DMAIC process (Define,
Measure, Analyze, Improve, Control) helps you improve existing processes through
incremental improvements.
Philosophy. By reducing variation in your business,
you'll make more data-driven, customer-focused decisions.
How serious are managers at leading companies about Six Sigma? One sign is the martial
arts terminology used to describe leading practitioners, who can officially rise
to the rank of Six Sigma green belt or black belt in the corporate world.
Using the Balanced Scorecard approach for Six Sigma success.
One approach recommended by Six Sigma professionals is the use a Balanced
Scorecard to select project metrics, making sure they meet both business and customer
needs. This process includes measuring both financial and non-financial metrics,
as well as "lagging" and "leading" measures across four criteria:
Financial—What financial objectives must be accomplished
for project success?
Customer—What customer objectives will be met
by working on this project?
Internal Processes—Which processes must be improved
to achieve customer objectives?
Employee Learning/Growth—How must the team learn
and innovate to achieve project goals?
Lagging measures are measured at an event's end,
while leading measures are taken beforehand to
help you meet process/product objectives.
According to Praveen Gupta, author of Six Sigma Business Scorecard, linking
balanced scorecard(s) with Six Sigma gives organizations a means for fusing strategic
intent with tactical operational deployment. "(The) balanced scorecard has been
developed as a strategic management system that has had difficulty in being operationalized,"
he says. "Six Sigma is a more operational-driven methodology that focuses on execution
more than strategy." Still, it's possible to tap into the best of both worlds, suggests
Gupta. "Combining strategic intent through balanced scorecard and an execution methodology
via Six Sigma would make sense and allow users to benefit from the strengths of
both approaches."
Following are a few example entries from a typical four-column scorecard, which
lists the perspective, objective, metric and status of a goal (Red, Yellow or Green):
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