engineering recuitment DVC Junior Engineer Mock Test 2024 Physics Units, Dimensions and Measurements Accuracy, precision of instruments and errors in measurement
In a certain experiment, the mean absolute error (Δ bmean) for the 4 measurements b1, b2, b3, and b4 will be-
1
\(\frac {b_{1} +b_{2}+b_{3}+b_{4}} {4}\)
2
\(\frac {(| \Delta b_{1}| +| \Delta b_{2}|+| \Delta b_{3}|+| \Delta b_{4}|)} {4}\)
3
\(\frac {( \Delta b_{1} + \Delta b_{2}+\Delta b_{3}+ \Delta b_{4})} {4}\)
4
\(\frac {(| \Delta b_{1}^2| +| \Delta b_{2}^2|+| \Delta b_{3}^2|+| \Delta b_{4}^2|)} {4}\)