What is the difference between organizations which operate at Six Sigma level of performance versus organizations that perform at three or a two sigma level? If you were working as the editor in chief of a book publishing house, one of the key metrics that you would track would be the number of misspelled words. If your process was performing at three sigma capability, then there would be 1.5 misspelled words per page in the book. If the Process Performance improved to four sigma, there would be one misspelled word for 30 pages in the book. At five sigma, the performance would be one misspelled word in a set of encyclopedias. And at Six Sigma level of performance, there would be only one misspelled word in all the books in a small library are their processes beyond a six sigma level of performance.

Yes, pharmaceutical companies, airline safety manufacturing organizations need to have its performance levels beyond six sigma. How do you find this comparison next move on to the next chapter. The Six Sigma foundations