Is there a term for percent error type calculations when using the full scale value as the denominator instead of the actual value? Using percent error results in very high values when the actual quantities are small.
For example on a line rated at 500 MW with an error of 10 MW, what would I call the calculation that results in 2% for both of these cases:
assuming a calculated flow of 10 MW and an actual flow of 20 MW
% error = 50% =abs(10 MW-20 MW)/20 MW
% ????? = 2% =abs(10 MW-20 MW)/500 MW
assuming a calculated flow of 490 MW and an actual flow of 500 MW
% error = 2% =abs(10 MW-20 MW)/20 MW
% ????? = 2% =abs(490 MW-500 MW)/500 MW
Red Flag Submitted
Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The Eng-Tips staff will check this out and take appropriate action.
Reply To This Thread
Posting in the Eng-Tips forums is a member-only feature.
Since the later 1980s, manufacturing companies have seen over 3 percent in labor output year on year, with most of this productivty enhancement occuring because of the optimization of repetitive tasks. Download Now