Hi everyone, I have a problem about calculating the difference (error) between two sets of data. I am a rookie in statistics so could you please help.
For example, I have 2 two of data f1(x) (reference) and f2(x). please note these 2 sets decay from 0.5 and approach zero as their limit. Usually, I would use the relative error abs(f1(x)-f2(x)) / f1(x).
However, as these two is approaching zero so a problem occurs: at x very large, f1(x) for example could be 1e-6 and f2(x) could be 2e-6. So basically the relative error is 200% but actually, we can assume two sets match because the absolute value is very small.
So do you have any idea of a methodology to solve my problem? Thanks
