Question

In an experiment, the refractive index of glass was observed to be $1.45,1.56,1.54,1.44,1.54$ and $1.53$. Calculate Mean absolute error.

Answer 1

Mean value of measurements $=n=\frac{Sumofallmeasurements}{6}=1.51$

Absolute error of each measurement = | measurement - mean value |

$=0.06,0.05,0.03,0.07,0.03,0.02$ (only absolute value)

Mean value of Absolute error $=\Delta n=0.043$ (arithmatic mean of above )