Figure 3
From: Multifactorial experimental design and the transitivity of ratios with spotted DNA microarrays
Correlation of direct and indirect estimates of gene expression level. Log-log scatter plot of estimates of gene expression level for the 87 genes with non-overlapping credible intervals, comparing estimates from direct comparisons (X-axis) to estimates from independent, transitive comparisons (Y-axis). Excluding the two outliers (open circles) in Cartesian quadrant IV, which represent estimates different not just in magnitude but also direction, the regression is y = 1.001 × - 0.06, with a correlation r2 = 0.8 (P << 0.001).