Six Sigma

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Six Sigma (σ)

Six Sigma (== Template:IPA ==

The Template:IPA (International Phonetic Alphabet) is a system of phonetic notation based primarily on the Latin alphabet. It was devised by the International Phonetic Association in the late 19th century as a standardized representation of the sounds of spoken language.

Pronunciation

The pronunciation of the term "IPA" is /aɪ piː eɪ/ in English.

Etymology

The term "IPA" is an acronym for the International Phonetic Alphabet. The International Phonetic Association, founded in 1886, created the IPA to provide a single, universal system for the transcription of spoken language.

Related Terms

  • Phonetic notation: A system used to visually represent the sounds of speech. The IPA is one type of phonetic notation.
  • Phonetics: The study of the physical sounds of human speech. It is concerned with the physical properties of speech sounds (phonemes), and the processes of their physiological production, auditory reception, and neurophysiological perception.
  • Phonology: The study of the way sounds function within a particular language or languages. While phonetics concerns the physical production, acoustic transmission and perception of the sounds of speech, phonology describes the way sounds function within a particular language or languages.
  • Transcription (linguistics): The systematic representation of spoken language in written form. The source of the words transcribe and transcription, the term means "to write across" in Latin, and it's the process of converting spoken language into written form. In linguistics, this is often done using the IPA.

External links

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Languages: - East Asian 中文, 日本, 한국어, South Asian हिन्दी, Urdu, বাংলা, తెలుగు, தமிழ், ಕನ್ನಡ,
Southeast Asian Indonesian, Vietnamese, Thai, မြန်မာဘာသာ, European español, Deutsch, français, русский, português do Brasil, Italian, polski) is a set of techniques and tools for process improvement. It was introduced by engineer Bill Smith while working at Motorola in 1981. The term "Six Sigma" comes from statistics and is used in statistical quality control, which evaluates process capability.

Etymology

The term "Six Sigma" is derived from the Greek letter "sigma" (σ), which is used in statistics as a measure of variation, or dispersion. The "six" refers to the process's ability to produce at a level of 3.4 defects per million opportunities, which is statistically equivalent to a process that is 99.99966% defect-free, or six standard deviations from the mean.

Related Terms

  • Lean Six Sigma: A methodology that combines the strategies of Lean and Six Sigma to eliminate waste and improve process quality and efficiency.
  • DMAIC: An acronym for the five phases that make up the Six Sigma methodology: Define, Measure, Analyze, Improve, and Control.
  • DFSS (Design for Six Sigma): A business-process management method related to traditional Six Sigma, and is used in many industries, like finance, marketing, basic engineering, process industries, waste management, and electronics.
  • Process Capability: The measure of a process’s ability to produce output within specification limits.
  • Standard Deviation: A measure of the amount of variation or dispersion of a set of values.

See Also

External links

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