Question

What is a 4 sigma process?

Answer 1

Answer:

Many companies can actually compete at a 4-sigma level, which allows for 6,210 defects per million. Certain industries, such as health care and airlines, require higher sigma levels due to the fact that lives may be ruined or even ended by defects in the process.

Answer 2

A 4-sigma level translates to an aircraft crash rate of 0.6%.

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