Precision Measurement and Calibration: Statistical concepts and procedures, H. H. Ku, edU.S. Government Printing Office, 1968 |
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Page iv
... obtained directly from an author . Suggestions as to the selection of papers which should be included in future editions will be welcome . Current developments in measurement technology at NBS are covered in annual seminars held at ...
... obtained directly from an author . Suggestions as to the selection of papers which should be included in future editions will be welcome . Current developments in measurement technology at NBS are covered in annual seminars held at ...
Page 17
... obtained for the check standard serves not only a check on the process mean , but also can be used for evaluating the process variability . The same check standard , perhaps one of a group re- served for this purpose , is used ...
... obtained for the check standard serves not only a check on the process mean , but also can be used for evaluating the process variability . The same check standard , perhaps one of a group re- served for this purpose , is used ...
Page 23
... obtained as " readings " on a cali- brated scale are ordinarily the end product of every- day measurement in the ... obtain values of these quantities that conform to restric- tions upon , or interrelations among , the magnitudes of ...
... obtained as " readings " on a cali- brated scale are ordinarily the end product of every- day measurement in the ... obtain values of these quantities that conform to restric- tions upon , or interrelations among , the magnitudes of ...
Page 24
... obtain the following set of adjusted values : Adj ( A - B ) = ( A — B ) —¦ ¦ [ ( A − B ) + ( B − C ) + ( C − A ) ... obtained are usable at least - they may not be " best . " On the other hand , when additional observations are taken ...
... obtain the following set of adjusted values : Adj ( A - B ) = ( A — B ) —¦ ¦ [ ( A − B ) + ( B − C ) + ( C − A ) ... obtained are usable at least - they may not be " best . " On the other hand , when additional observations are taken ...
Page 26
... obtained is indefinite in that it does not indicate how many readings shall be taken before applying a test for consistency , nor what kind of test of ings consistency is to be applied to the numbers or pointer read- One of the objects ...
... obtained is indefinite in that it does not indicate how many readings shall be taken before applying a test for consistency , nor what kind of test of ings consistency is to be applied to the numbers or pointer read- One of the objects ...
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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 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.