Proficiency may refer to: *

Language proficiency Language proficiency is the ability of an individual to use language with a level of accuracy that transfers meaning in production and comprehension. There is no singular definition of language proficiency: while certain groups limit its scope to ...

, the ability of an individual to speak or perform in an acquired language *

Expertise An expert is somebody who has a broad and deep understanding and competence in terms of knowledge, skill and experience through practice and education in a particular field. Informally, an expert is someone widely recognized as a reliable sou ...

Skill A skill is the learned ability to act with determined results with good execution often within a given amount of time, energy, or both. Skills can often be divided into domain-general and domain-specific skills. For example, in the domain of w ...

, the learned capacity to carry out pre-determined results often with the minimum outlay of time, energy, or both *

Uncertainty coefficient In statistics, the uncertainty coefficient, also called proficiency, entropy coefficient or Theil's U, is a measure of nominal association. It was first introduced by Henri Theil and is based on the concept of information entropy. Definition ...

, an information-theoretic measure of nominal association

See also