Counting statistics — variation of standard deviation with counting time

  • R. Jenkins
  • J. L. de Vries
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.

Copyright information

© N.V. Philips’ Gloeilampenfabrieken 1978

Authors and Affiliations

  • R. Jenkins
  • J. L. de Vries

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