Estimating Measurement Precision by Means of Measurement Differences
نویسنده
چکیده
When it is necessary to determine the precision of a certain instrument B, devoted to point position measurement for instance, but not necessarily, one way is to measure a certain number of points with B as well as with another instrument A, whose precision is known. Forming the differences between the B and A measurements, it is possible to calculate B precision by means of the dispersion of the differentiated quantities. The paper investigates how the precision of A influences the estimation of the precision of B. Even if the subject is basic, it is not easy to find in textbooks; for this reason the paper could have a certain interest for teaching purposes.
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