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Table 4 Table 4

From: A robust measure of correlation between two genes on a microarray

   true correlation
   0.5 0.7 0.9
   BWC SP BWC SP BWC SP
sample size 10 0.894 0.918 0.874 0.802 0.853 0.529
  20 0.900 0.894 0.896 0.788 0.892 0.535
  50 0.898 0.878 0.915 0.795 0.920 0.607
  100 0.910 0.888 0.912 0.791 0.908 0.608
  1. Efficiency of biweight correlation (BWC) vs. Spearman (SP) correlation. All values are simulated variance of correlation of interest (biweight or Spearman) divided by the variance of the Pearson correlation. Simulations are based on 10,000 samples of standard normal bivariate data sets with the appropriate sample size and correlation.