Six
sigma is a philosophy and set of methods companies use to eliminate defects in
their products and processes<span>.
It also seeks to reduce variation in the processes that
lead to product defects. It measures quality,
process for Continuous Improvement and enabler for culture
change so culturally six sigma means companies must learn how to be nearly
flawless in executing key processes and achieving business imperatives. Quantitatively six sigma means the average process generates no
more than 3.4 defects per million. Therefore, based on the figures given above
the defects per million opportunities (DPMO) is 15, 333 and the defective rate
us 1.533% and the passed rate is 98.467%.</span>