Question

Accuracy of any measurement is determined by

• A. mean absolute error
• B. percentage error
• C. relative error
• D. arithmetic mean of given measurements

Answer 1

The correct option is A mean absolute error

Accuracy is the closeness of the measurement to the true value. We take the arithmetic mean of the given measurements to be the true value.
We know that any measurement is given by, $a=a_{mean}\pm \Delta a_{mean}$.
Hence, more the value of mean absolute error $\Delta a_{mean}$, more is the deviation of measurement from the true value, so less accurate and vice-versa.
Therefore, accuracy is determined by mean absolute error.