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  2. Median graph - Wikipedia

    en.wikipedia.org/wiki/Median_graph

    The median of three vertices in a tree, showing the subtree formed by the union of shortest paths between the vertices. Every tree is a median graph. To see this, observe that in a tree, the union of the three shortest paths between pairs of the three vertices a, b, and c is either itself a path, or a subtree formed by three paths meeting at a single central node with degree three.

  3. Fan chart (statistics) - Wikipedia

    en.wikipedia.org/wiki/Fan_chart_(statistics)

    a diameter which indicates the median; a fan (a segment of a circle) which indicates the quartiles; two feathers which indicate the extreme values. The scale on the circular line begins at the left with the starting value (e. g. with zero). The following values are applicated clockwise. The white tail of diameter indicates the median.

  4. Log-normal distribution - Wikipedia

    en.wikipedia.org/wiki/Log-normal_distribution

    We have samples from two independent log-normal distributions with parameters (,) and (,), with sample sizes and respectively. Comparing the medians of the two can easily be done by taking the log from each and then constructing straightforward confidence intervals and transforming it back to the exponential scale.

  5. Median algebra - Wikipedia

    en.wikipedia.org/wiki/Median_algebra

    A median graph is an undirected graph in which for every three vertices , , and there is a unique vertex ,, that belongs to shortest paths between any two of , , and . If this is the case, then the operation x , y , z {\displaystyle \langle x,y,z\rangle } defines a median algebra having the vertices of the graph as its elements.

  6. Squaregraph - Wikipedia

    en.wikipedia.org/wiki/Squaregraph

    The squaregraphs include as special cases trees, grid graphs, gear graphs, and the graphs of polyominos. As well as being planar graphs , squaregraphs are median graphs , meaning that for every three vertices u , v , and w there is a unique median vertex m ( u , v , w ) that lies on shortest paths between each pair of the three vertices. [ 1 ]

  7. Median (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Median_(disambiguation)

    Median (graph theory), a vertex m(a,b,c) that belongs to shortest paths between each pair of a, b, and c; Median algebra, an algebraic triple product generalising the algebraic properties of the majority function; Median graph, undirected graph in which every three vertices a, b, and c have a unique median

  8. Plot (graphics) - Wikipedia

    en.wikipedia.org/wiki/Plot_(graphics)

    The graphs can be used together to determine the economic equilibrium (essentially, to solve an equation). Simple graph used for reading values: the bell-shaped normal or Gaussian probability distribution, from which, for example, the probability of a man's height being in a specified range can be derived, given data for the adult male population.

  9. Partial cube - Wikipedia

    en.wikipedia.org/wiki/Partial_cube

    The trees and hypercube graphs are examples of median graphs. Since the median graphs include the squaregraphs, simplex graphs, and Fibonacci cubes, as well as the covering graphs of finite distributive lattices, these are all partial cubes. The planar dual graph of an arrangement of lines in the Euclidean plane is a partial cube.

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