Precision Measurement and Calibration: Statistical concepts and procedures, H. H. Ku, edU.S. Government Printing Office, 1968 |
From inside the book
Results 1-5 of 100
Page 19
... computed from the values of the check standard will be in agree- ment , i.e. , the long run average of the variability as estimated from the control chart on the standard deviation should approach the corresponding value from the ...
... computed from the values of the check standard will be in agree- ment , i.e. , the long run average of the variability as estimated from the control chart on the standard deviation should approach the corresponding value from the ...
Page 42
... compute , by extrapolation from available data , a more or less subjective estimate of the " precision " of the end results of a measurement operation , to serve as a substitute for a direct experimental measure of their ...
... compute , by extrapolation from available data , a more or less subjective estimate of the " precision " of the end results of a measurement operation , to serve as a substitute for a direct experimental measure of their ...
Page 53
... compute a chance . All he can validly do is to express an opinion ; and that opinion can validly relate only to certain theoretical considerations and to the magnitude of the errors that might have escaped his attention , not to any ...
... compute a chance . All he can validly do is to express an opinion ; and that opinion can validly relate only to certain theoretical considerations and to the magnitude of the errors that might have escaped his attention , not to any ...
Page 70
... computed by recognized sta- tistical procedures from the same mea- surements as the reported value itself . To avoid possible misunderstanding , in such cases , the term " computed ( or estimated ) standard error " ( " computed standard ...
... computed by recognized sta- tistical procedures from the same mea- surements as the reported value itself . To avoid possible misunderstanding , in such cases , the term " computed ( or estimated ) standard error " ( " computed standard ...
Page 71
... computed value of the standard error , or , probable error , so designated , should be given together with a state- ment of the number of degrees of freedom on which it is based . 2 ) The bounds to its systematic error and the measure ...
... computed value of the standard error , or , probable error , so designated , should be given together with a state- ment of the number of degrees of freedom on which it is based . 2 ) The bounds to its systematic error and the measure ...
Other editions - View all
Common terms and phrases
adjusted values analysis applied arithmetic mean ASTM average b₁ b₁x bias Bureau of Standards calculated calibration Churchill Eisenhart 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 intercept interlaboratory interval estimate labora laboratory large number Least Squares limiting mean linear magnitude mass materials mathematical meas measurement process ment National Bureau normal distribution number of measurements observations obtained operation ORDP pair paper parameters percent plotted points population possible quantity radium standard range ratio relationship reported sample scores sequence Shewhart shown single slope sources specimens standard deviation standard error stations statistical control systematic error Table temperature test procedure tion tory true value uncertainty urement variables variance W. J. Youden W₁ weight
Popular passages
Page 45 - ON THE ALGEBRAICAL AND NUMERICAL THEORY OF ERRORS OF OBSERVATIONS AND THE COMBINATION OF OBSERVATIONS.
Page 5 - 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 5 - 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 5 - 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 procédures, and theoretical and mathematical analyses.
Page 5 - 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 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....
Page 31 - Absolute certainty is a privilege of uneducated minds — and fanatics. It is, for scientific folk, an unattainable ideal.