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Concept and Type for Degree of Freedom in Quality Statistics  

Choi, Sung-Woon (Department of Industrial Engineering, Kyungwon University)
Publication Information
Journal of the Korea Safety Management & Science / v.9, no.6, 2007 , pp. 193-196 More about this Journal
Abstract
This paper presents real examples of quality statistics for users to easily understand the concept and purpose for obtaining the degree of freedom. Moreover degree of freedom by Satterwaite can be used for linear combinations of unbiased variance. Finally effective degree of freedom by Welch-Satterthwaite is applicable to obtain expanded uncertainty considering type A and type B uncertainty.
Keywords
Degree of Freedom; Satterthwaite; Linear Combinations of Unbiased Variance; Welch-Satterthwaite; Expanded Uncertainty;
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  • Reference
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