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Contour plot for optimal number of repeated measures when the cost ratio ranges from 0 to 50 and σ2m ranges from 0.11 to 1.5 (10–60% of total trait variance). Trait variance excluding measurement error is fixed to 1 (σ2mg = 0.2, σ2pg = 0.4, σ2e = 0.4). The numbers on the plot indicate the optimal number of repeated measures.
