Visualization of power and Type I error estimates comparison for p = 205 features, correlation ρ = 0.4, and all sample sizes.
Each row of the plots corresponds to a feature selection method. ANOVA FDR adjustment cutoff is 0.2. The value of the sample size (n) is displayed on the x-axis in all plots. The estimates of power and Type I error are provided on the y-axis. In the left column power estimates are provided based on the four different features for each of the effect sizes (Δ1 = 0.2 is the red line, Δ2 = 0.5 is the blue line, and Δ3 = 0.8 is the green line). In the right column Type I error estimates are provided (beige lines) based on the random noise features together with a 0.05 threshold plotted as a purple dashed line. In the middle column the proportions of non-different detected features within each block correlated to different ones for each of the blocks and corresponding effect sizes (Δ1 = 0.2 is the red line, Δ2 = 0.5 is the blue line, and Δ3 = 0.8 is the green line) are displayed.