With respect to another set, a set such that each of its elements is also an element of the other set
The set {a, b} is a both a subset and a proper subset of {a, b, c} while the set {a, b, c} is a subset of {a, b, c} but not a proper subset of {a, b, c}.
A subset of a national standard for ease-of-use within one industry The subset usually indicates only those segments, elements, and code values needed by the industry
A subset of a given set is a collection of things that belong to the original set For example, A={a,b} could include, a, b, a and b, or the null set (neither)
Set x is a subset of set y if every member of x is also a member of y Notice that this means that every set is a subset of itself We say that set x is a proper subset of set y if x is a subset of y, but x is not the same set as y
A subset of a group of things is a smaller number of things that belong together within that group. subsets of the population such as men, women, ethnic groups, etc. a group of people or things that is part of a larger group of people or things subset of
Any group of informants defined in terms of their responses to questions in the instrument The responses to a survey may be summarised and reported as a whole, but it is usually helpful to see separately the results obtained from groups of informants who have some features in common