Statistical Analysis
Kruskal-Wallis (KW) or Wilcoxon signed rank tests were used to compare the two subject groups. The KW test checks if the mean ranks across the groups are same. Under the special case where the data distribution in each group has similar shape, the test can be interpreted as comparing the medians. Similarly, the WSR test checks if the median of the differences between the paired samples approaches zero. This becomes a comparison of medians in a scenario wherein the relative positions of the samples in both the distributions with respect to the median are similar. In cases where these tests were used multiple times within a plot (for example, in Figure 2-5c), we did not correct for multiple comparisons as the number of bins under consideration were chosen arbitrarily.