According to common sense american values of good and evil. If the Y axis indicates the number of people, and the X axis represents relative good or evil, -1 being relatively evil, and 1 being relatively good. This terribly drawn distrobution indicates my opinion of what percentage of people are good, and what percentage of people are evil, or indifferent, and -2 and 2 are not drawn on the scale, but consider them to mean the most evil and good possible, and the graph exponentially decreases towards those two numbers.
But keep in mind this is only according to my interpretation of common sense american values, and my opinion on the distrobution of good and evil according to those values. And also keep in mind, I might not share those values.