The state has retained authority to regulate certain aspects of land use, delegated some authority to county or regional agencies, and in certain instances has shared land use authority with local governments. Occasionally, the legislature withdraws this delegated authority by enacting legislation which preempts the local role.
A histogram is a bar graph that illustrates the frequency of an event occurring using the height of the bar as an indicator. A Pareto chart is a special type of histogram that represents the Pareto philosophy (the 80/20 rule) through displaying the events by order of impact.
The histogram, dot plot and box plot in each separate section represent the same data set. Symmetric (bell shaped) - when graphed, a vertical line drawn at the center will form mirror images, with the left half of the graph being the mirror image of the right half of the graph. In the histogram and dot plot, this shape is referred to as being a bell shape or a  mound . The most typical symmetric histogram or dot plot has the highest vertical column in the center. This shape is often referred to as being a normal curve  (or normal distribution).