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Homework Help: Agreement of 2 values

  1. Nov 27, 2008 #1
    SOLVED:Agreement of 2 values

    This is my first post, so I hope this is the write section for it..

    How do you check if 2 values agree with eachother (I've seen it called the "comparison test", but I can't find what I'm looking for by google-ing that).

    For example, you have


    And you have to find the "ratio". The values are said to agree if R<2 and disagree if R>2


    EDIT: found the answer

    R=(x1-x2)/root(sigmax1^2 + sigmax2^2)
    Last edited: Nov 27, 2008
  2. jcsd
  3. Nov 27, 2008 #2


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    Homework Helper

    Welcome to PF!

    Hi Graham!

    Glad you sorted it out! :smile:

    Anyway, welcome to PF

    and here's a square-root: √ and a plus-or-minus: ± and a sigma: σ for you. :wink:
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