Calculating Six
Sigma
Calculating Six
Sigma is no more a daunting task, there are many ways to Calculating
Six Sigma. As Six Sigma is based on the formula for the normal
distribution, invited by C.F. Gauss. Calculating Six Sigma value
depends on certain requirements and environmental boundary
conditions, which have to be considered. More important than the
Calculating Six Sigma value is the application of the six sigma
method to improve the business processes of a company and increase
the customer satisfaction.
Calculating Six
Sigma value is based on the normal distribution theorem by
Carl-Friedrich Gauss with this formula: Calculating Six Sigma
formula describes a curve whose form is defined by two parameters,
the mean average value, and the standard deviation sigma. Six Sigma
is the tool used to help design highly capable parts that meet set
specifications, namely customer specifications. These specifications are +/-
six standard deviations from the process mean, which is the center
line.
As you can see,
+/-6 deviations (6 Sigma) contains 99.9999% of all values. It can never reach 100%
though. This means that
there will always be room for improvement. Requirements and
environmental boundaries must be considered when Calculating Six
Sigma values as well. The calculation of a six sigma value is based
on one single process step.
A Calculating
Six Sigma Process Improvement initiatives indicating the amount of
defects in a process per one million opportunities; that is, the
number of defects divided by (the number of units times the number
of opportunities) = DPO, times 1 million = DPMO. There are numerous
Calculating Six Sigma techniques that can be used to scrutinize
cost, schedule, and quality (project-level and personal-level) data
as a project proceeds. This simple to use and basic calculator
allows you to enter some values into cells and see the equivalent
Six Sigma result.
The Basic Mode
of the Sigma Calculator automatically adds a 1.5 Sigma shift to the
process Sigma value that is calculated. It's done because it is the
"standard" way that Sigma is reported (note: this may be different
in your company, but it is done in this manner by Motorola, GE and
many other companies which are legend in this field). By doing so,
the calculator result in Calculating Six Sigma value assumes that
you are providing long-term data and it is providing short-term
Sigma. The 1.5 Sigma shift is based on the assumption that over
time, and with a sufficiently large number of samples, a realistic
Sigma value is 1.5 Sigma less than that calculated to show the
success of your project.
There are many
Six Sigma calculators for Calculating Six Sigma calculations. Six
Sigma Calculator, FREE, January 2003. A demonstrator e-book
explaining the essential facts about the process sigma metric and
how it is calculated. Includes a fully functional DPMO to process
sigma calculator based on opportunities and defects, as well as two
DPMO to sigma metric lookup tables.
You can
download and save target file or run this e-book demonstrator to
ensure that your system is compatible with our e-book format before
downloading and purchasing other e-books. (427k) for more details,
visit: http://www.sixsigmashop.co.uk/downloads/SigCalc.exe
Sigma metric
demonstrator, FREE, January 2003. See how changes in the mean,
standard deviation, and customer or specification limits change the
value of the process sigma metric. Using an Excel worksheet this
demonstrator allows changes to be shown real-time. You can download
the Excel workbook (375k) for Calculating Six Sigma at:
http://www.sixsigmashop.co.uk/downloads/dynamic%20distributions.xls
Or the zip file
(85k) from:
http://www.sixsigmashop.co.uk/downloads/dynamic%20distributions.zip