A similar quantity is the relative uncertainty or fractional uncertainty. We can use the following formula on the sample data above. Given a sample size of data the standard.
The percent uncertainty can be interpreted as describing the uncertainty that would result if the measured value had been100 units.
It is computed as. You get the relative uncertainty by dividing the absolute uncertainty with a measured value and multiplying by 100 to get percentage. Next determine the measured value. If a measurement is taken with respect to a standard or known value calculate relative uncertainty as follows.