Evaluation of Microarray Preprocessing Algorithms Based on Concordance with RT-PCR in Clinical Samples
Figure 2
Pearson correlation coefficients between microarray and RT-PCR.
The distribution of Pearson correlation coefficients for each microarray preprocessing algorithm is indicated by a box plot, for a) the colon cancer data set (84 genes, 36 samples), and b) the cell line data set (75 genes, 29 samples). The box indicates the 25th to 75th percentile, and the heavier line indicates the median. Algorithms are displayed in decreasing order of the median, such that the more accurate algorithms are at the top. The colorgrams on the right-hand side indicate P values (Wilcoxon test) comparing each pair of algorithms.