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Average fluctuation

  1. Jan 27, 2010 #1
    1. The problem statement, all variables and given/known data

    I have been asked find the average fluctuation in a certain value. But I don't know what that means. Say x fluctuates about a mean.

    [tex](\overline{(\Delta V)^{2}})^{1/2}?[/tex]

    But that's the root mean square fluctuation, which isn't the same. Then how about

    [tex]\overline{\Delta V}[/tex]

    now that's the average fluctuation right?
    But if I only know the average value, and the root mean square fluctuations, then how can I find the plain old average fluctuation from that?
    Last edited: Jan 27, 2010
  2. jcsd
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