Power for the F test in two-factor ANOVA is calculated using a similar method to the one shown in Section 11.3. For fixed values of α₁, α₂, …, α_I, power calculations are based on the noncentral F distributions with parameters v₁ = I – 1, v₂ = (I – 1)(J – 1), and non centrality parameter

a.

Data From Exercise 46

b.

Example 11.13

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λ=1 Σαΐ/στ. J