Chunk #5 — Results and Discussion — Methods for calculating power with heritability in one-degree-of-freedom models

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GWAPower: a statistical power calculation software for genome-wide association studies with quantitative traits.

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where τi is the phenotype mean of genotype group i; σ2 is the error variation; and ri is the number of individuals in each genotype group i. Therefore, distribution parameters such as means and variances are still necessary for this approach.