The Wald-Wolfowitz runs test

The Wald-Wolfowitz method tests whether the number of runs is small enough for the null hypothesis of a random distribution of signs to be rejected. 

The number of runs in the experimental data is compared with the numbers in Table A.IO, which refers to the P= 0.05 probability level. The table is entered by using the appropriate values for N, the number of -t signs, and M, the number of - signs. If the experimental number of runs is smaller than the tabulated value, then the null hypothesis can be rejected. 

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