Figure 8
From: Normalization and experimental design for ChIP-chip data
Measurement of within-array noise using lagged differences. Generalizing the concept of differences on probe values along the chromosomal location, median absolute deviation is measured for probes that are apart by the distance shown on the x-axis. In both experiment and control, after about 800 bp, there is no spatial correlation, and this deviation can be used as a noise level for standardizing across arrays.