For the analysis of income, Statistics Canada distinguishes between the following statistical units: * Household: "a person or group of persons who occupy the same dwelling" * Economic families: "two or more persons who live in the same dwelling and are related to each other by blood, marriage, common-law union, adoption or a foster relationship (a couple may be of opposite or same sex)" * Census families: "a married couple and the children, if any, of either and/or both spouses; a couple living common law and the children, if any, of either and/or both partners; or a lone parent of any marital status with at least one child living in the same dwelling and that child or those children (all members of a particular census family live in the same dwelling; a couple may be of opposite or sa