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Uncertainties/error propogation

  1. Apr 10, 2005 #1
    i know the following:

    q = x+y+z

    ERROR IN q = sqrt((error in x^2)+(error in y^2)+(error in z^2))

    but, what if the equation i have is

    q = x+y-z

    would it still be that same equation or would it be,

    ERROR IN q = sqrt((error in x^2)+(error in y^2)-(error in z^2))
  2. jcsd
  3. Apr 10, 2005 #2
    It would be the same equation, add the error
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