Quality may refer to:
Concepts
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Quality (business), the ''non-inferiority'' or ''superiority'' of something
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Quality (philosophy), an attribute or a property
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Quality (physics)
In response theory, the quality of an excited system is related to the number of excitation frequencies to which it can respond. In the case of a homogeneous, isotropic system, the quality is proportional to the FWHM.
This sense of the phrase ...
, in response theory
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Energy quality
Energy quality is a measure of the ease with which a form of energy can be converted to useful work or to another form of energy: i.e. its content of thermodynamic free energy. A high quality form of energy has a high content of thermodynamic fr ...
, used in various science disciplines
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Logical quality
In many philosophies of logic, statements are categorized into different logical qualities based on how they go about saying what they say. Doctrines of logical quality are an attempt to answer the question: "How many qualitatively different ways ...
, philosophical categorization of statements
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Service quality Service quality (SQ), in its contemporary conceptualisation, is a comparison of perceived expectations (E) of a service with perceived performance (P), giving rise to the equation SQ=P-E. This conceptualistion of service quality has its origins in ...
, comparison of expectations with performance in a service
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Vapor quality, in thermodynamics, the ratio of mass of vapor to that of vapor and liquid
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Data quality
Data quality refers to the state of qualitative or quantitative pieces of information. There are many definitions of data quality, but data is generally considered high quality if it is "fit for tsintended uses in operations, decision making and ...
, refers to the condition of a set of values of qualitative or quantitative variables
Practices
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Quality assurance
Quality assurance (QA) is the term used in both manufacturing and service industries to describe the systematic efforts taken to ensure that the product(s) delivered to customer(s) meet with the contractual and other agreed upon performance, design ...
(QA)
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Quality control
Quality control (QC) is a process by which entities review the quality of all factors involved in production. ISO 9000 defines quality control as "a part of quality management focused on fulfilling quality requirements".
This approach places ...
(QC)
Places
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Quality, Kentucky, an unincorporated community
Brands and enterprises
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Quality Comics, an American comic book publisher between 1939 and 1956
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Quality Communications, a comic book publisher started in 1982
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Quality Records, a Canadian entertainment company
Music
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''Quality'' (CDQ album), 2016
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''Quality'' (Talib Kweli album), 2002
*"Quality", a song by Khalil from ''
Prove It All'', 2017
*"Quality", a song by Maluma from ''
Papi Juancho'', 2020
*Tone quality refers primarily to
timbre; quality can also refer to:
**
Dynamics (music)
In music, the dynamics of a piece is the variation in loudness between notes or phrases. Dynamics are indicated by specific musical notation, often in some detail. However, dynamics markings still require interpretation by the performer dependin ...
, every aspect of the execution of a given piece
**
Texture (music), the way the melodic, rhythmic, and harmonic materials are combined in a composition
Other
* The qualities, short for the
Quality press (prestigious newspapers) in the U.K.
{{Disambiguation, geo