Propagation of Error
The uncertainty in a value obtained as a result of a calculation is found using the propagation of errors formulas. These formula work for indeterminate errors. For addition and subtraction:
s2 are variance. The total variance is the sum of the individual variance.
For multiplication and division:
In this case error is propagated as the squared relative standard deviation.
Other useful formulas are:
This page was created by Professor Stephen Bialkowski, Utah State University.
Monday, August 28, 2006