Figure 4

Pearson's, Spearman's and Kendall's correlations in MDS and hierarchical clustering. The MDS plots (A, C, E) and dendrograms of hierarchical clustering (B, D, F) of the 13 genes based on a different correlation metric. For the MDS plot, the x-axis and y-axis give the coordinates of the 13 genes chosen to represent the dissimilarities of the genes among 145 samples. For the hierarchical clustering, the y-axis (height) indicates the dissimilarity between two clusters of genes. The dissimilarity is based on one minus the correlation coefficients of normalized log₂ copy numbers, where the correlation coefficients can be Pearson's (A, B), Spearman's (C, D) and Kendall's (E, F).