“The ability to simplify means to eliminate the unnecessary so that the necessary may speak.”
Upon completion of this chapter, you will be able to:
Sigma (σ) is a letter in the Greek alphabet used to denote the standard deviation of a process. The term Six Sigma is derived from the field of statistics. Sigma quality level is sometimes used to describe the output of a process. A Six Sigma quality level is said to equate to 3.4 defects per million opportunities. However, the term in practice ...