Precision Measurement and Calibration: Statistical concepts and procedures, H. H. Ku, edU.S. Government Printing Office, 1968 |
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Page 4
... magnitude as the quantity we are trying to check . These examples illustrate the necessity for a careful evaluation before venturing a commit- ment on the performance of a particular measure- ment process . 3 times one standard ...
... magnitude as the quantity we are trying to check . These examples illustrate the necessity for a careful evaluation before venturing a commit- ment on the performance of a particular measure- ment process . 3 times one standard ...
Page 20
... MAGNITUDE OF SYSTEMATIC ERRORS FROM KNOWN SOURCES BEING NEGLIGIBLE . TEST COMPLETED AUGUST 17 , 1966 WASHINGTON , D.C. 20234 FOR THE DIRECTOR , PAUL E. PONTIUS , CHIEF MASS AND VOLUME SECTION DIFF FROM NOMINAL ( mg ) 22 PROCESS IN ...
... MAGNITUDE OF SYSTEMATIC ERRORS FROM KNOWN SOURCES BEING NEGLIGIBLE . TEST COMPLETED AUGUST 17 , 1966 WASHINGTON , D.C. 20234 FOR THE DIRECTOR , PAUL E. PONTIUS , CHIEF MASS AND VOLUME SECTION DIFF FROM NOMINAL ( mg ) 22 PROCESS IN ...
Page 21
... magnitude , or the final result of a least squares " reduction " of measurements of a number of different quantities that bear known relations to " Presented at the 1962 Standards Laboratory Conference , National Bureau of Standards ...
... magnitude , or the final result of a least squares " reduction " of measurements of a number of different quantities that bear known relations to " Presented at the 1962 Standards Laboratory Conference , National Bureau of Standards ...
Page 22
... magnitude of the difference - between the process average or limiting mean associated with measurement of a particular quantity by the measurement process concerned and the true value Tof the magnitude of this quantity . On first ...
... magnitude of the difference - between the process average or limiting mean associated with measurement of a particular quantity by the measurement process concerned and the true value Tof the magnitude of this quantity . On first ...
Page 23
... magnitudes of these quantities imposed by the nature of the problem . Thus , it may not be practicable or economically feasible to take readings at exactly the prescribed temperatures ; but quite practicable and feasible to bring and ...
... magnitudes of these quantities imposed by the nature of the problem . Thus , it may not be practicable or economically feasible to take readings at exactly the prescribed temperatures ; but quite practicable and feasible to bring and ...
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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
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Page 45 - ON THE ALGEBRAICAL AND NUMERICAL THEORY OF ERRORS OF OBSERVATIONS AND THE COMBINATION OF OBSERVATIONS.
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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.