Precision Measurement and Calibration: Statistical concepts and procedures, H. H. Ku, edU.S. Government Printing Office, 1968 |
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Page 3
... Figure 1 These large weights , for example , are for use by another part of the Bureau to calibrate force measuring devices . *** Figure 3 The three photographs above started with a group of standards whose cumulative total mass was in ...
... Figure 1 These large weights , for example , are for use by another part of the Bureau to calibrate force measuring devices . *** Figure 3 The three photographs above started with a group of standards whose cumulative total mass was in ...
Page 4
... Figure 6 We would be in greater difficulties if we were to try to establish compliance with Class S adjustment tolerances in the same manner with reference to Class M standards , which are known only to be within the Class M tolerance ...
... Figure 6 We would be in greater difficulties if we were to try to establish compliance with Class S adjustment tolerances in the same manner with reference to Class M standards , which are known only to be within the Class M tolerance ...
Page 5
... Figure 7 By practically universal agreement , the mass of the International Prototype Kilogram is the basic unit for mass measurement . It is a particular object , defined to have an exact invariant mass of one kilogram , that is to say ...
... Figure 7 By practically universal agreement , the mass of the International Prototype Kilogram is the basic unit for mass measurement . It is a particular object , defined to have an exact invariant mass of one kilogram , that is to say ...
Page 6
... Figure 10 Our access to the true value scale as established by the international standard is through prototype kilogram number 20. The estimated true value of number 20 is 1 kilogram minus 19 micrograms , based on several measurements ...
... Figure 10 Our access to the true value scale as established by the international standard is through prototype kilogram number 20. The estimated true value of number 20 is 1 kilogram minus 19 micrograms , based on several measurements ...
Page 7
... Figure 13 Mass is an inertial property of an object , which , within the framework in which our measurements apply , is considered to be proportional to the amount of material . Mass is generally thought of as being measured through ...
... Figure 13 Mass is an inertial property of an object , which , within the framework in which our measurements apply , is considered to be proportional to the amount of material . Mass is generally thought of as being measured through ...
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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 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....
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