Solar, for instance, is less useful in the long dark night of the northern winter.Washington Post (Aug 14, 2015) sol (sun) + ar (suffix forming adjectives) As the roots and definition show, the word should be an adjective, but the example sentence uses it as a shortened form of the noun phrase solar energy..
Disproportionality is the overrepresentation of a particular race or cultural group in a program or system compared to their representation in the general population. Disproportionality affects all systems such as the educational, mental health and judicial systems creating additional costs within these areas.
The 75% statistic is easy and seems disproportionate to the ratio of blacks and whites in society, but the 85% statistic purports to claim a knowledge of all drug activity that occurs in the U.S. The idea that someone can know how much drug activity occurs seems unrealistic.