Measurement Process Characterization
2.5. Uncertainty analysis
2.5.5. Propagation of error considerations
Standard deviations of reported values that are functions of a
single variable are reproduced from a paper by H. Ku
The reported value, Y, is a function of the average of N measurements on a single variable.
is an average of N measurements
= standard deviation of X.
|Approximation could be seriously in error if n is small--|
|Not directly derived from the formulas|
Note: we need to assume that the original data follow an approximately normal distribution.