Answer to Question #209205 in Mechanical Engineering for Shaikh Moin tahirh

Question #209205

How does error differ from an uncertainty


1
Expert's answer
2021-06-22T05:08:33-0400

"Error" is defined as a difference between the desired and actual performance or behavior of a system or object. This definition is the basis of operation for many types of control systems, in which error is defined as the difference between a set point and the process value.


"Uncertainty" is a central concept quantifying the dispersion one may reasonably attribute to a measurement result. Such an uncertainty can also be referred to as a measurement error.



In summary, "Error" is the difference between a measurement result and the value of the measured while "Uncertainty" describes the reliability of the assertion that the stated measurement result represents the value of the measured.


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