Uncertainty of measurement is the doubt that exists about the result of any measurement.
Introduction to Uncertainty Measurement
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Uncertainty of measurement is the doubt that exists about the result of any measurement. You might think that well-made rulers, clocks and thermometers should be trustworthy, and give the right answers. But for every measurement – even the most careful – there is always a margin of doubt.
Learn the uncommon skill of Engineering: Uncertainty Measurement.
You may be interested in the uncertainty of measurement simply because you wish to make good quality measurements and to understand the results.
Lessons
Error Vs Uncertainty
Free PreviewAccuracy Vs Precision
Traceability and Measurement Standard
Measurement Standard
Source of Uncertainty
How to reduce Uncertainty?
Standard deviation
Example of Standard Deviation: Suppose you have a set of n readings Start by finding the average:Consider the set of readings 16, 19, 18, 16, 17, 19, 20, 15, 17…
Normal Distribution
Coverage factor
Usually, standard uncertainty referred by 68% and Expected uncertainty is 95% if we assume a normal distribution. We can create our desire coverage interval as below. case-1 For coverage interval…
How to calculate uncertainty?
To calculate the uncertainty of a measurement, firstly you must identify the sources of uncertainty in the measurement. Then you must estimate the size of the uncertainty from each source.…
Standard and Expanded uncertainty
Standard uncertainty All contributing uncertainties should be expressed at the same confidence level, by converting them into standard uncertainties. A standard uncertainty is a margin whose size can be thought…