setting tolerences for land area selection for the agents:
high = quartile3 IE 75 Percentile
mean = mean density
median = the second quartile, Q2 or median
low = quartile1 IE 25 Percentile
max = Maximum density of the area
Governs how far an agent can move in any time step, takes the
BasicPointAgent.movement movement paremater as the distance for random movement
in both X and Y Directions.