This figure shows the percentage of all possible relationships that have a given score in our scoring system. For instance, about 8% of relations have a score very near zero and only about 1.5% have a score near 45. One way to evaluate a relationship to to know the percentage of relationships that are "worse" (or "better"). From this chart we can calculate better (or worse) by simply summing together all of the area to the right (or left) of a relationship. For instace, about 6% of all relationships have a score of 40 or better. Mathematically speaking, this is equivalent to integrating under the curve.
Also, any relationship in which the gender preferences are incompatable receives a score of -100.