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 is largely touted in the business media. More than simply a concept, Six Sigma is a metric, a methodology, and a management system. Since its creation in 1986, it has gained such a solid reputation that many business consultants still advise its use. Bill Smith and Bob Galvin, both of Motorola, developed the Six Sigma quality improvement process in 1986. The idea of Six Sigma is to improve quality so that the number of defects becomes so few that they are statistically insignificant.