. Author manuscript; available in PMC: 2013 Jul 1.

Published in final edited form as: Comput Stat Data Anal. 2012 Jul 1;56(7):2317–2333. doi: 10.1016/j.csda.2012.01.012

Table 2.

2 × 2 contingency table summarizing decisions versus truth in a two-class situation. Here $\hat{F P} = S$ and $\hat{F N} = U$ . The restriction that the number of tests found significant (V + S) be equal to the number of true significant ones (U + V) places a heavy restriction on the values of the table. In particular, we must have U + V = V + S and thus U = S, i.e. $\hat{F P} = \hat{F N}$ .

		Decision
		-	+
Truth	+	U	V
Truth	-	T	S