Understanding the Six Sigma Principle

Six Sigma is one of the major buzzwords in theoriginally developed by Motorola in 1987 and since then
corporate world and implementing the Six Sigma in theit has been applied to almost all kinds of manufacturing
respective organizations has become the priority forand service industries. As a quality concept, this
Quality controllers and the QAD (Quality Assuranceprinciple aims for the highest standards of process
Departments) in these organizations. What exactly isexcellence.
meant by Six Sigma and what are the benefits thatThe people implementing Six Sigma are classified as
implementing it brings to the table? In statisticalBlack Belts, Green Belts and Master Black Belt. Let us
terminology, Six Sigma refers to "six" standardlook at what each of these terms mean. The green
deviations from the mean and indicates the margin ofbelt is a person or a player who is a member of the
error while inspecting the good or services producedSix Sigma process improvement team and is trained in
by an Organization.the Six Sigma methodology. This is the basic level for
What this principle means is that there can be awhich all potential Six Sigma practitioners aspire.
tolerance of about two defects per billion samples. InThe Black Belt is a leader in the implementation
jargon free language this means that a manufacturingmethodology for process improvements and is
process cannot go beyond producing more than twosomeone who can act as a guide to the process
defects per billion of manufactured goods. While thisimprovement teams. These Black Belts also advise
may seem impossible to attain in practice, it isthe management on how to go about implementing the
nonetheless a feat that has been achieved by manySix Sigma methodology. This is the intermediate level
organizations. The reason that this principle haswhich one gets after attaining the Green Belt and it is
captured the imagination of the quality controllers isnot uncommon to find people who are certified as
because if this principle is implemented successfully, it isBlack Belts in senior positions in the management.
the nearest that the organization can get to perfectionFinally, the highest level is the Master Black Belt. The
in its processes.person who has achieved this status acts as the
While the debate whether there can be aProgram Manager or Director and leads the Six Sigma
manufacturing process free of errors or a softwareimplementation effort in the organization. He or she
without bugs rages on, many organizations are turningchecks all the processes for compliance and is the
to this principle to aid them in their efforts to make theirone whom the Black Belts turn to for advice and
processes free of errors. This is a concept that wasguidance in implementing the Six Sigma effort.