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  2. Homogeneity and heterogeneity (statistics) - Wikipedia

    en.wikipedia.org/wiki/Homogeneity_and...

    There are then questions as to whether, if the records are combined to form a single longer set of records, those records can be considered homogeneous over time. An example of homogeneity testing of wind speed and direction data can be found in Romanić et al., 2015. [9]

  3. Homogeneity and heterogeneity - Wikipedia

    en.wikipedia.org/wiki/Homogeneity_and_heterogeneity

    Homogeneity and heterogeneity; only ' b ' is homogeneous Homogeneity and heterogeneity are concepts relating to the uniformity of a substance, process or image.A homogeneous feature is uniform in composition or character (i.e., color, shape, size, weight, height, distribution, texture, language, income, disease, temperature, radioactivity, architectural design, etc.); one that is heterogeneous ...

  4. Homogeneous graph - Wikipedia

    en.wikipedia.org/wiki/Homogeneous_graph

    A graph is connected-homogeneous if every isomorphism between two connected induced subgraphs can be extended to an automorphism of the whole graph. In addition to the homogeneous graphs, the finite connected connected-homogeneous graphs include all cycle graphs , all square rook's graphs , the Petersen graph , and the 5-regular Clebsch graph .

  5. Market structure - Wikipedia

    en.wikipedia.org/wiki/Market_structure

    Market definition is an important issue for regulators facing changes in market structure, which needs to be determined. [1] The relationship between buyers and sellers as the main body of the market includes three situations: the relationship between sellers (enterprises and enterprises), the relationship between buyers (enterprises or ...

  6. Homoscedasticity and heteroscedasticity - Wikipedia

    en.wikipedia.org/wiki/Homoscedasticity_and...

    Consider the linear regression equation = +, =, …,, where the dependent random variable equals the deterministic variable times coefficient plus a random disturbance term that has mean zero. The disturbances are homoscedastic if the variance of ε i {\displaystyle \varepsilon _{i}} is a constant σ 2 {\displaystyle \sigma ^{2}} ; otherwise ...

  7. List of writing genres - Wikipedia

    en.wikipedia.org/wiki/List_of_writing_genres

    Apocalyptic literature – details the authors' visions of the end times as revealed by an angel or other heavenly messenger. [18] Bildungsroman – "coming of age" story. The German word "Bildung" can mean both "education" and "self-development." Crime fiction. Campus murder mystery; Historical fiction. Biographical novel; Historical romance [19]

  8. Homogeneous function - Wikipedia

    en.wikipedia.org/wiki/Homogeneous_function

    In mathematics, a homogeneous function is a function of several variables such that the following holds: If each of the function's arguments is multiplied by the same scalar, then the function's value is multiplied by some power of this scalar; the power is called the degree of homogeneity, or simply the degree.

  9. Homogeneity (semantics) - Wikipedia

    en.wikipedia.org/wiki/Homogeneity_(semantics)

    In formal semantics, homogeneity is the phenomenon where plural expressions that seem to mean "all" negate to "none" rather than "not all". For example, the English sentence "Robin read the books" requires Robin to have read all of the books, while "Robin didn't read the books" requires her to have read none of them. Neither sentence is true if ...