Counting statistics — variation of standard deviation with counting time
Part of the Philips Technical Library book series (PTL)
A certain analysis line gave 800 c/s under certain instrumental conditions. Given that the standard deviation (σ) of a given number of counts (N) is equal to √ N, calculate the standard deviation expected in a counting time of 20 seconds.
© N.V. Philips’ Gloeilampenfabrieken 1978