#Six sigma data analysis excel software#
They can be readily accessed and opened directly in their respective software packages to permit the preparation of new files specifically for use by the reader.Įlectronic Books Only: CD-ROM files are available for download. For all of these examples either Excel files or Minitab files or both have been prepared (available from Quality Press). On each topic covered, reasonably practical examples are used to illustrate and demonstrate the procedures introduced and discussed. Some derivations are contained in this text, but the approach here is meant to be more practical, in following each topic introduced and expanded with examples. They also provide direction in actions necessary to improve estimates and confidence levels if results are too variable to render important decisions. Statistical theories and methodologies allow estimation of important characteristics as well as levels of confidence or assurance (or lack thereof) with respect to the estimations.
Hence, reliability is a multidisciplined field of endeavor. Statistical theories and methodologies provide a large number of analytical tools to assist the reliability engineer in studying the performance of products and the fruits of the physical considerations, even revealing further improvements that can be made in the physical properties. But when a product has been designed and manufactured, its performance in terms of durability, strength, and life become a matter of test, measurement, and analysis. Many reliability engineers are gainfully employed in considerations of the physical nature of components and systems-bringing to bear theories and methodologies of physics, electronics, mechanics, material science, chemistry, and so on.
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