Figure 13

For comparison with Figure 3. Here a comparison of the Affymetrix SNP5 and SNP6 platforms are shown. ROC curves are presented to assess the performance of a single probe/probe-set for distinguishing the log-ratios associated with differing copy numbers from the log-ratios of chromosome 13 (where copy-numbers should agree) for the HapMap pair of samples. For SNP6 five replicate HapMap/HapMap (NA15510 vs NA10851) comparisons are shown using raw data available from the Affymetrix X chromosome titration study.