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adjusted analysis applied approximately arithmetic mean ASTM average bias Bureau of Standards calculated calibration Churchill Eisenhart coefficient comparison components computed confidence interval confidence limits constant control chart correct corresponding curve degrees of freedom determinations effect equal equation evaluation example experiment experimental factors Figure formulas gage block given imprecision independent individual intercept interlaboratory interval estimate known labora laboratory large number limiting mean linear magnitude materials mathematical meas measurement process ment method National Bureau normally distributed number of measurements observations obtained operation ORDP pair paper parameters particular percent plotted points population possible problem propagation of error quantity radium standard random errors range ratio relationship reported sample scores sequence Shewhart shown significant numbers single slope sources specimens standard deviation standard error stations statistical control systematic error Table temperature test procedure tion tolerance intervals tory true value uncertainty urement variables variance weight
Page 45 - ON THE ALGEBRAICAL AND NUMERICAL THEORY OF ERRORS OF OBSERVATIONS AND THE COMBINATION OF OBSERVATIONS.
Page 437 - TECHNICAL NEWS BULLETIN The best single source of information concerning the Bureau's research, developmental, cooperative and publication activities, this monthly publication is designed for the industry-oriented individual whose daily work involves intimate contact with science and technology— for engineers, chemists, physicists, research managers, product-development managers, and company executives. Annual subscription; Domestic, $1.50; foreign, $2.25".
Page 437 - Monographs — Major contributions to the technical literature on various subjects related to the Bureau's scientific and technical activities. Handbooks — Recommended codes of engineering and industrial practice (including safety codes) developed in cooperation with interested industries, professional organizations, and regulatory bodies. Special Publications...
Page 438 - States of a complete and consistent system of physical measurement; coordinates that system with measurement systems of other nations; and furnishes essential services leading to accurate and uniform physical measurements throughout the Nation's scientific community, industry, and commerce.
Page 437 - PERIODICALS JOURNAL OF RESEARCH reports National Bureau of Standards research and development in physics, mathematics, and chemistry. Comprehensive scientific papers give complete details of the work, including laboratory data, experimental procÚdures, and theoretical and mathematical analyses.
Page 437 - Provides quantitative data on the physical and chemical properties of materials, compiled from the world's literature and critically evaluated.
Page 72 - Manual on Quality Control of Materials (American Society for Testing and Materials, Philadephia, 1951).
Page 438 - THE INSTITUTE FOR BASIC STANDARDS provides the central basis within the United States of a complete and consistent system of physical measurement; coordinates...
Page 36 - It is another matter to formulate specific statements regarding these statistical characteristics of measurement processes. 4.2. 1 Precision — Precision may be stated in terms of an index of precision of the form ▒a, where a is some positive number. The numerical value of a in any such index of precision will be smaller the more closely bunched are the individual measurements of a process. However, any such index must have a clearly understandable interpretation regarding variability of measurements....