Homogeneity

• Homogeneous (mathematics)
  Homogeneous (mathematics)
  
  In mathematics, homogeneous may refer to:*Homogeneous polynomial, in algebra*Homogeneous function*Homogeneous equation, in particular: Homogeneous differential equation...
  , a variety of meanings
• In statistics
  Statistics
  
  Statistics is a Mathematics pertaining to the collection, analysis, interpretation or explanation, and presentation of data. It also provides tools for prediction and forecasting based on data....
   homogeneity can refer to
• Homogeneity of variance: Homoscedasticity
  Homoscedasticity
  
  In statistics, a sequence or a vector of random variables is homoskedastic if all random variables in the sequence or vector have the same finite set variance....
  
• Logically consistent
  Consistency
  
  Consistency can refer to:* Consistency * Consistency , the psychological need to be consistent with prior acts and statements* "Consistency", an 1887 speech by Mark Twain...
   data matrices: homogeneity (statistics)
  Homogeneity (statistics)
  
  In statistics, homogeneity arises in describing the properties of a dataset, or several datasets, and relates to the validity of the often convenient assumption that the statistical properties of any one part of an overall dataset are the same as any other part....
  
• Homogeneity (physics)
  Homogeneity (physics)
  
  In physics, homogeneous mixtures are mixtures that have definite, consistent composition and properties. Particles are uniformly spread. For example, any amount of a given mixture has the same composition and properties....
  , in physics, two particular meanings: On one hand, translational invariance. On the other, homogeneity of units in equations, related to dimensional analysis
• Homogenetic or homoplastic, in biology, applied both to animals and plants, of having a resemblance in structure, due to descent from a common progenitor with subsequent modification
• Homogenization
  Homogenization
  
  Homogenization is a term used in many fields such as chemistry, mathematics, agricultural science, food technology, sociology and cell biology....
   is intensive mixing of mutually insoluble phases (sometimes with addition of surfactants) to obtain a soluble suspension or emulsion, for example homogenizing milk so that the cream doesn't separate out
• In physical chemistry
  Physical chemistry
  
  Physical chemistry is the application of physics to macroscopic, microscopic, atomic, subatomic, and particulate phenomena in chemical systems within the field of chemistry traditionally using the principles, practices and concepts of thermodynamics, quantum chemistry, statistical mechanics and kinetics....
  , homogeneous describes a single-phase system as opposed to a heterogeneous
  Heterogeneous
  
  Heterogeneous is an adjective used to describe an object or system consisting of multiple items having a large number of structural variations. It is the opposite of homogeneous, which means that an object or system consists of multiple identical items....
   system. See also phase diagram
  Phase diagram
  
  A phase diagram in physical chemistry, mineralogy, and materials science is a type of Graph of a function used to show conditions at which thermodynamically-distinct phase can occur at thermodynamic equilibrium....
  s and the classification of catalysts
  Catalysis
  
  Catalysis is the process in which the reaction rate of a chemical reaction is either increased or decreased by means of a chemical substance known as a catalyst....
  
• In the context of procurement/purchasing, homogeneous is used to describe goods that do not vary in their essential characteristic irrespective of the source of supply
• In the context of ethnicity, eg 'Oregon is so white, so homogenous'.

See also

• Heterogeneity