Resolution:
## Figure 5.
False positive rates (probabilities of committing Type I Error) while direct comparison
of two distinct population of spines is performed by means of Kolgomorov-Smirnov double
sided test. The variations of the mean values (per sample) are resulting not only from the sampling
diversity but also from systematic factors (for each studied sample) affecting the
measured parameter, see Results for details. The ensemble of 10000 simulation runs
has been used to calculate the probabilities. The p-value was set at the level of
0.001 (the blue solid line). We have used n=4 animals and m=15,30,60 spines per sample (dotted, dashed and solid line) respectively and the spine
area was used as the measured parameter. Note the superficially counter intuitive
behavior: The more spines per sample we have the larger influence of systematic factors
on statistics performance is observed
Ruszczycki |