Defining Lean Six Sigma

Aristide Aartsengel and Selahattin Kurtoglu

Chapter 2 in Handbook on Continuous Improvement Transformation, 2013, pp 7-24 from Springer

Abstract: Abstract The word sigma is the eighteenth letter of the Greek alphabet (Σ, σ), transliterated as ‘S, s’. These symbols are used to denote a mathematical sum (Σ) and a standard deviation (σ); the term standard deviation was introduced to statistics by Karl Pearson (1894), which is a quantity calculated to indicate the extent of deviation for a group of elements as a whole from their expected central tendency. A low standard deviation indicates that the elements tend to be very close to their expected central tendency, whereas high standard deviation indicates that the elements are spread out over a large range from their expected central tendency.

Keywords: Business Activity; Central Tendency; Scientific Management; Excess Cost; Business Application (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1007/978-3-642-35901-9_2

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