Six Sigma was developed at Motorola in response to Western companies losing market share to Japanese manufacturers. Six Sigma is more of an analytical tool that breaks down every business process into its component parts and uses statistics to identify points of weakness and waste. Sometimes the Ea...
1 Sigma is the Greek letter often used in statistics to represent the sample standard deviation, a common measure of the dispersion, or spread within a data set drawn from a larger population. Some textbooks use a lowercase ‘s’ instead. Prior to modern spreadsheets, the calculation of sigma...