Precision Measurement and Calibration: Statistical concepts and procedures, H. H. Ku, edU.S. Government Printing Office, 1968 |
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Page 7
... operations , more or less formalized . Detailed procedures and weighing designs , ranging from simple to complex , are available for a wide variety of requirements . Modern computation equipment ranging from desk calculator to elec ...
... operations , more or less formalized . Detailed procedures and weighing designs , ranging from simple to complex , are available for a wide variety of requirements . Modern computation equipment ranging from desk calculator to elec ...
Page 8
... operation . The end result is an estimated best value , which , in order to be useful , must be accompanied by the ... operations to be performed and the planned sequence in which they are to be carried out , the operator , the location ...
... operation . The end result is an estimated best value , which , in order to be useful , must be accompanied by the ... operations to be performed and the planned sequence in which they are to be carried out , the operator , the location ...
Page 11
... operation . Weighing Method SUBSTITUTION METHOD Figure 30 To illustrate the principle , the double substitu- tion method is performed as follows : We start with a simulated equal arm balance , a tare weight- the white cylinder near the ...
... operation . Weighing Method SUBSTITUTION METHOD Figure 30 To illustrate the principle , the double substitu- tion method is performed as follows : We start with a simulated equal arm balance , a tare weight- the white cylinder near the ...
Page 21
... operation that yields as an end result a number that indicates how much of the property the thing has . Measurement is ordinarily a repeatable operation , so that it is appropriate to regard measurement as a production process , the ...
... operation that yields as an end result a number that indicates how much of the property the thing has . Measurement is ordinarily a repeatable operation , so that it is appropriate to regard measurement as a production process , the ...
Page 22
... operation must have attained what is known in industrial quality control language as a state of statistical control . Until a measurement operation has been " debugged " to the extent that it has attained a state of statistical control ...
... operation must have attained what is known in industrial quality control language as a state of statistical control . Until a measurement operation has been " debugged " to the extent that it has attained a state of statistical control ...
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Common terms and phrases
adjusted values analysis applied arithmetic mean ASTM average b₁ b₁x bias Bureau of Standards calculated calibration laboratory Churchill Eisenhart comparison components computed confidence interval constant control chart correct corresponding curve degrees of freedom determinations effect equal equation evaluation example experiment experimental factors Figure gage block given imprecision independent intercept interlaboratory interval estimate labora large number limiting mean linear magnitude mass materials meas measurement process ment method of measurement National Bureau normally distributed number of measurements observations obtained operation ORDP pair paper percent plotted points population possible quantity radium standard range ratio relationship reported value sample scores sequence Shewhart shown single slope sources specimens standard deviation standard error statement stations statistical control systematic error Table temperature test procedure thermometers tion tory true value uncertainty urement variables variance W. J. Youden W₁ weight Young's modulus
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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 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.