Figure 2: Shown are histograms of chi-square statistics for all 8799 genes in the case study of section 7, for the genes eliminated in steps 1 and 2 of the filtration process employed by Blalock et al. [38], and for the genes remaining after each of the three steps. Superimposed against each histogram are the fitted CCS model defined in section 3, for which parameter estimates are displayed in table 1, and the null model χ22(0).