Precision Measurement and Calibration: Statistical concepts and procedures, H. H. Ku, edU.S. Government Printing Office, 1968 |
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... calibration laboratory did not become a reality until just recently . The first published example of this realization appears to be that given by Pontius and Cameron in their Monograph ( 1.1 ) on mass measurement . A prime mover in the ...
... calibration laboratory did not become a reality until just recently . The first published example of this realization appears to be that given by Pontius and Cameron in their Monograph ( 1.1 ) on mass measurement . A prime mover in the ...
Page 3
... calibrate force measuring devices . ** Figure 3 The three photographs above started with a group of standards whose ... calibration service provides values for single , selected groups , and ordered sets of standards , the values being ...
... calibrate force measuring devices . ** Figure 3 The three photographs above started with a group of standards whose ... calibration service provides values for single , selected groups , and ordered sets of standards , the values being ...
Page 6
... Calibration are with reference to a minimum number of selected mass standards . For example , practically all sets of metric weights are calibrated with reference to a pair of 1 kg or a pair of 200 g or a pair of 100 g weights . The ...
... Calibration are with reference to a minimum number of selected mass standards . For example , practically all sets of metric weights are calibrated with reference to a pair of 1 kg or a pair of 200 g or a pair of 100 g weights . The ...
Page 11
... calibrated with reference to a stand- ard , and from that point until recalibration , it is generally assumed to have a long term constancy approaching that of the standard . Most mass measurement equipment can be used either way . The ...
... calibrated with reference to a stand- ard , and from that point until recalibration , it is generally assumed to have a long term constancy approaching that of the standard . Most mass measurement equipment can be used either way . The ...
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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 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.