Standard deviation of peak values

Hi all

I have a sligth issue, concerning standard deviation of some peak values.

I have three curves (a, b and c) plus a mean curve

I am interested in the peak values, but need the standard deviation of these aswell. Etc. mean value peak = 168 +/- std. dev?

Any thoughts of how to do that? I am pretty new to matlab i have to say.

Best regards Anders

Answer 1

[Anders]

Thank you Iain

I am aware it is not the best, but i only have three samples, and my supervisor want some kind of statistics on them.

Answer 2

[Iain]

Yuo can get the peak value with:

 peak = max(curve);

You can calculate a standard deviation with:

 sigma = std(samples);

So,

 peak(1) = max(a);
 peak(2) = max(b);
 peak(3) = max(c);
 sigma = std(peak);

Not really all that sensible to use stanard deviation for 3 samples though.