Figure 5
From: Normalization of oligonucleotide arrays based on the least-variant set of genes
RA-plots for spike-in data. RA-plots for both HGU133A and HGU95A spike in data. These plots show the array-to-array variability vs residual variance from the probe-level linear model. The black line represents the fitted values from a quantile regression with Ï„ = 0.6. The triangles represent the spiked-in genes. The stars are the new spike-ins according to MCGee et al. (2006).