This chapter is from the book ï. Using Mixed Cell References. A mixed cell reference is either an absolute column and relative row or absolute row and relative column. When you add the $ before the column letter you create an absolute column or before the row number you create an absolute row.
Six Sigma was popularized in the late 1990's and introduced into 3M by former CEO James McNerney, a former GE executive. It involves a set of process tools designed to eliminate production defects and wastage, and raise efficiency. The Six Sigma process killed innovation at 3M, said Nicholson.
Six Sigma was registered June 11, 1991 as U.S. Service Mark 74,026,418. In 2005 Motorola attributed over US$17 billion in savings to Six Sigma. Other early adopters of Six Sigma include Honeywell (previously known as AlliedSignal) and General Electric, where Jack Welch introduced the method.ix Sigma seeks to improve the quality of the output of a process by identifying and removing the causes of defects (errors) and minimizing variability in manufacturing and business processes.