SignTest:

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   Compare the relative accuracy of two signals.
   The demo is for the case
   in which there are 7 positive signs out of 10 cases.
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   Form:
   [s, nPos] = SignTest( x1, x2 )
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   Inputs
   ------
   x1              (1,:)    Sample set 1
   x2              (1,:)    Sample set 2

   -------
   Outputs
   -------
   s               (1,1)    Confidence that they are identical
   nPos            (1,1)    Number of positive signes

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Children:

Common: Probability/Combinations