D=½?_i|X_i-Y_i|

where X_i equals the percent of race or sex group X in the labor force in occupation i and Y_i equals the percent of race or sex group Y in occupation i. D is the measure of one half the sum of the absolute difference between the percentage distributions. The values range from 0 to 100 and measures the relative separation or integration of groups across an area. If the value equals 0% it means the area is distributed evenly.