normative
adj. relating to a norm: pertaining to a particular standard of comparison for a person or group of people, often as determined by cultural ideals regarding behavior, achievements or abilities, and other concerns. For example, a normative life event such as marriage or the birth of a child is expected to occur during a similar period within the lifespans of many individuals, and normative data reflect group averages with regard to particular variables or factors, such as the scores of females on a specific test or the language skills of 10-year-olds. Compare nonnormative.