Rojer,
Yes, that's right. I messed the error with the relative error. With the term Max error I meant Max relative error.
Yannos
"Roger Stafford" wrote in message <k6mqfc$e47$1@newscl01ah.mathworks.com>...
> "Yannos M" wrote in message <k6mnfo$4di$1@newscl01ah.mathworks.com>...
> > I think it is possible the RMS error to be greater than the max error.
> >
> > Eg.
> >
> > X=[2 3 2 3]
> > Y=[4 4 4 4]
> >
> > RMS=1.58
> > Max error=1
>          
> The "maximum error" between two quantities X and Y is always understood to be
>
> max(abs(XY))
>
> and in your example that equals 2, not 1. The minimum error would be 1.
>
> What Torsten told you is quite true. The RMS error is never greater than the maximum error. In fact it is easy to show that the RMS error can be equal to the maximum error only if all absolute errors are equal. Otherwise it must be smaller.
>
> Roger Stafford
