Figure 2

The probabilities of committing Type II Error (concluding a “false negative”) while analyzing the results of simulated linear growth of three quantities: head-width (dashed blue line), spine area (dotted red line) and length (solid green line). The plots correspond to linear growth by 50% (A), 20% (B), 10% (C). The same number of samples (the x axis) was used for both the control and the treatment group, each sample contained 60 spines. The comparison of groups was based on the t-test with p-value 0.01. The ensemble of 2000 simulation runs has been used to calculate the probabilities