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McNemar test (paired 2×2)

Tests whether two paired methods have the same success probability, using only discordant pairs (b and c).

Inputs

Discordant count b (A=1, B=0)

Discordant count c (A=0, B=1)

Alpha (significance level)

Chi-square (cc): (|b−c|−1)²/(b+c). Exact p-value uses a binomial test.

Result

Enter b and c to compute McNemar’s test.

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