The boxplot of Pearson's (left) and Spearman's (right) correlation coefficients within the "color-coded" groups of genes matched by two different probesets of equivalent quality. Only "green", "red" and "black" groups of genes are shown, as "yellow" group contains no genes. In each color-coded group, bold horizontal line corresponds to a median, while box denote 25-75% range. The results of Kruskal-Wallis one-way ANOVA test are in a right top box of plot. Star indicates significant difference by Mann-Whitney U test (p < 0.05, Bonferroni correction).