Market discrimination is the denial of service, overtly or indirectly, to subgroups in the population because of age, race, sex, or other factors. It may be indirect, when a pattern of practice emerges in the activities of a business, or it may be overt in the pricing or availability of a good or service.
Market discrimination is measurable in that it appears as the residual after all other reasonable factors have been considered and quantified. In financial transactions, in interactions with the public, and in settings where there is an economic interest being served on the part of a business, one can consider economic benefit and economic risk to establish whether a group suffers discrimination.