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Scree test for the Györffy et al Affymetrix dataset. Eigenvalues from the 30 × 30 cell line correlation matrix showed that, beginning with the break in the plot after component 9, a straight scree line could be fitted to the remaining values. Such a finding suggests that the eigenvalues after component 9 represent only error variance. Note that for clarity of presentation, the first eigenvalue of 27.020 was not plotted.
