The plot shows C² versus P_g for a data set. Listed are the centroid (in green) and its error (upper right in red) calculated from s/ÖN.

We can also estimate the error in P_g from values of P_g when C² = C²_min+1.

Vary P_g (move the blue square with the mouse) to find values of e (m - m_min) when C² = C²_min+1.

How similar is the value you get when compared with the listed 'Error'?

Statistical uncertainty decreases indefinitely as 1/ÖN. However, in general other factors will also cause the peak position to vary, e.g. variations in amplifier gain.