Mean value of measurements = n = Sum of all measurements / 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 =Δn=0.043 (arithmatic mean of above )
When you report refractive index from the experimnet , you say :1.51+−0.043
Relative error=Δnn=0.0431.51=0.0285