Figure 3: Heat maps of the results for data simulated from the four models, with sample size 3. The color encodes the sign of the difference between percentages PU and PL of points lying above and below the diagonal in Figure 2 for all pairs of statistics. Green indicates PU<PL, red indicates PU>PL, while yellow indicates those cases where the difference was less than 0.05. The best statistics to identify genes with large signal are labeled with purple, while the best statistics to identify reliably measured differentially expressed genes are labeled with blue. These results are further summarized in Table 4.