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Convenient construction of t ‐tests for quality evaluation
Author(s) -
Nachlas Joel A.
Publication year - 1992
Publication title -
quality and reliability engineering international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 62
eISSN - 1099-1638
pISSN - 0748-8017
DOI - 10.1002/qre.4680080109
Subject(s) - selection (genetic algorithm) , computer science , quality (philosophy) , value (mathematics) , sample (material) , reliability engineering , mathematics , algorithm , calculus (dental) , engineering , artificial intelligence , machine learning , philosophy , chemistry , epistemology , chromatography , medicine , dentistry
An available numerical approximation to the Student's t distribution is described and its use in the construction of t ‐tests is presented. The result is a convenient and accurate computer based approach to the selection of the sample size and critical value to be used in a t ‐test. Computational logic for implementation of the approach is provided and the method is illustrated by an example.