3.43 In Section 3.5.6 we analyzed a 2 x 2 table having entries (3, 0/0, 3). Explain why the unconditional P-value, evaluated at π = 0.50, is related to Fisher conditional P-values for various tables by 6 Σ
k=0 2 P(X² ≥ 6) = P(X² ≥ 6|n+1 = k)P(n+1 = k).
32 Thus, the unconditional P-value of 35 is a weighted average of the Fisher P-value for the observed column margins and P-values of 0 corresponding to the impossibility of getting results as extreme as observed if other margins had occurred (i.e., ॐ = The Fisher quote in Section 3.5.7 gave his view about this.
0.10